On the evening of December 27, the Long March 5 remote three carrier rocket was successfully launched. Guo Wenbin/photo

　　Qian Xuesen, known as the father of China Aerospace, once said: If scientific experiments can be successful every time, then why experiment? After setbacks and failures, we will become smarter.

　　The "Phoenix Nirvana" trip of the Long March 5 is the best example at present.

　　Two years ago, the second launch of the Long March 5 was defeated. This news hung over the hearts of Chinese people like a haze, and once caused doubts. Today, the largest rocket in China has been reborn for more than 900 days, and it has gone out again.

　　On December 27th, the Long March 5 started its third flight at Wenchang Space Launch Site, accompanied by a roar that shook the mountains. A dazzling flame surrounded the big rocket and flew out of the sky. In the end, the mission was declared successful, and this big rocket was dormant for two years, and finally it was proud!

　　Behind the soaring, it can be described as "twists and turns". In the words of Long Lehao, academician of China Academy of Engineering and chief designer of Long March series rockets of the First Academy of China Aerospace Science and Technology Corporation, "Failure is almost success, and success is almost failure" — — Over the past two years, more than 900 days and nights, China astronauts dare not take it lightly every moment.

　　Soul-stirring 2 hours and 43 minutes

　　Long March 5 is a rocket destined to be extraordinary from birth, which has entrusted too many people’s dreams and long-cherished wishes. For a long time, when it comes to the development of a certain technology or a certain field in China, people have become accustomed to using "big but not strong" to describe it. But aerospace is breaking this statement, and the first punch to break this statement is the Long March 5 — — It is equivalent to the admission ticket of a "space power". Its development difficulty can be imagined.

　　As early as 1986, the demonstration of a new generation of launch vehicles was carried out in China. Since the mid-1990s, the research on a new generation of rocket engines has been put on the agenda. In 2016, a new generation of big rockets developed after 30 years of demonstration — — The first flight of Long March 5 was successful, which attracted much attention.

　　However, behind the success of the first flight, there was also an episode of "almost failure".

　　Hu Xudong was the commander of the first flight mission 01 of the Long March 5. He still remembers that it was November 3, 2016, and the launch time was postponed from 18: 00 to 20: 43. In the meantime, it experienced six suffocating time resets, and even faced the test that the launch mission was forced to cancel.

　　People who watched the launch thus remembered the special moment of "near misses" and gained a somewhat more intuitive understanding of this rocket, which kicked off the era of China Grand Carrier.

　　When the time was set back to 17: 30 on the same day, the atmosphere in the test hall suddenly became tense, and hundreds of scientific and technological personnel looked at the big screen together — — The rocket "has a fever" because the primary circulation precooling pump of the rocket can’t be started normally. At the moment, the temperature displayed on the big screen is 238K, which is much higher than the take-off standard of 110K … …

　　According to Hu Xudong’s recollection, at this time, the mission headquarters decided that if the pre-cooling effect of the engine could not meet the launch conditions by 19: 30, the propellant leakage procedure would be started and the launch mission would be cancelled.

　　At 19: 28, there were only two minutes left from the "bottom line", the engine temperature dropped to a predetermined value, and the rocket successfully "cooled down".

　　"Set the ignition time to 20: 40." Hu Xudong exhaled a sigh of relief greatly. However, even at the last minute before the launch, emergencies have occurred again and again.

　　At 20: 40, only one minute left before the final launch, Hu Xudong just issued the password of "1 minute preparation", and suddenly heard Wei Kang, the commander of the control system, issue "the most awesome password in China’s space history": "01, stop launching!"

　　"What’s the matter?"

　　At this moment, Hu Xudong involuntarily stood up and blurted out 1.

　　Ten seconds before the launch, Hu Xudong began to count down, and suddenly he received a request from Wei Kang "Please wait a moment".

　　"Stop the launch!" Hu Xudong stopped emission process, and once again organized the troubleshooting. The problem was finally solved.

　　The "ignition" password was finally issued and the rocket took off.

　　Behind the cheers, astronauts including Hu Xudong began to sort out and analyze the launch data, and they had to face 630,000 original data — — These are related to whether China Rocket can still "turn the corner" next time.

　　Guess the beginning but not the ending.

　　Long Lehao was on the scene for the first two launch missions of Long March 5. One of his obvious feelings is that although the first launch mission was successful, the "stumbling" three hours before takeoff seems to be more touching. He said: "This is inevitable. After all, this is a brand-new rocket and the situation is too complicated."

　　Accordingly, the second launch, for many people at the scene, "was originally very smooth." "Before taking off, it was not as thrilling as the Long March 5 Yaoyi (the first flight mission, reporter’s note, the same below)." Long Lehao said that the launch site of Yaoer was "much calmer" and "much better" in the first few minutes.

　　At that time, he was still thinking, "This may be the first tortuous experience, exposing some problems, and then doing a lot of improvement work, having experience and a relatively stable mentality."

　　Indeed, after the Long March 5 took off from Wenchang Space Launch Site for the second time, everything was normal in the first few minutes. But after flying for more than 300 seconds, the problem appeared.

　　"All of a sudden, the flight curve of [Long March 5] is not quite right … …” In the test hall of Wenchang Space Launch Site, Long Lehao saw from the big screen that the curve was not going up in their predetermined direction, but was "falling" down.

　　His mind is tight: the flight curve falls, which means that the rocket is gradually losing thrust. If the thrust is not enough, the rocket will have no acceleration and will not be able to overcome the gravity field.

　　"At that time, I had a presentiment that ‘ It’s over ’ This launch is going to fail … …” Long Lehao said.

　　The measuring hall was silent.

　　A monitoring team member at the scene told reporters that their hearts, like the flight curve on the big screen, "kept falling", and many people silently shed tears.

　　That night, Xinhua News Agency released the news of mission failure.

　　"This result is what no one wants to see." Long Lehao said that he soon told himself that the failure of scientific experiments was inevitable. What we need to do now is how to find out the cause of the failure as soon as possible, take measures, try to go around as soon as possible, and prove once again that our rocket is trustworthy with practical actions.

　　That night, when Long Lehao left the test hall, he didn’t have much communication with the space junior on the spot. But he believes that these young astronauts have the ability to withstand the pressure. "Now it does seem that they are not overwhelmed by difficulties — — Get down and still stand up! " Long Lehao said.

　　What’s the problem with the engine again?

　　On April 16, 2018, the National Space Administration released the investigation on the failure of the Long March 5 remote rocket, which mentioned that the Long March 5 remote rocket suddenly failed when it flew to 346 seconds.

　　The cause of the failure is that the turbine exhaust device of the first unit of the core-stage liquid hydrogen and liquid oxygen engine is abnormal in the local structure under the complex mechanical and thermal environment, and the engine thrust drops sharply instantly, resulting in the failure of the launch mission.

　　Engine is also an engine. Yes, this word, which once stung the Chinese people’s key technology in the aviation field, has become a stumbling block in the aerospace field this time.

　　A big rocket is naturally inseparable from a big thrust, and a big thrust is inseparable from the development motivation. Before the Long March 5, the maximum thrust of a single rocket engine in active service in China was only about 70 tons, so it was "inadequate" to launch a very large spacecraft.

　　A new type of high thrust engine came into being. According to Zhou Limin, secretary of the Party Committee of the Sixth Academy of China Aerospace Science and Technology Corporation, after 15 years of unremitting research, eight newly developed 120-ton liquid oxygen kerosene engines were assembled on the four boosters of the Long March 5, and four newly developed hydrogen-oxygen engines were assembled on the first-class and second-class rockets.

　　He has an image saying that developing an engine is as difficult as climbing Mount Everest. "Some foreign experts say that even if we design it, we can’t make it." Among them, the hydrogen-oxygen engine that failed in the remote second mission is even more difficult.

　　Zhou Limin still remembers that in the face of brand-new engines, the research team began to tackle scientific and technological problems day and night, and dozens of new materials and more than 100 new processes were overcome one by one. However, the starting of the engine has become the biggest obstacle.

　　He said that in the starting stage, the whole engine is in an unstable dynamic process, because the speed changes from a static state to tens of thousands of revolutions, and the temperature changes from a low temperature state to a high temperature state. Our control sequence is controlled in milliseconds, and any action that is not well coordinated and fails to achieve the expected result may lead to failure.

　　At first, the development team was hit hard. After the prototype of the engine used in the first flight of Long March 5 was developed, its test results failed four times in a row: two starting explosions and two burning gas systems.

　　Zhou Limin said that these have dealt a great blow to the confidence of the entire research and development team and design team. "Many people dream of the explosion scene in their dreams, and they can’t eat or sleep well."

　　Find out the "devil" and destroy the "enemy"

　　And these are just the "pains" that China astronauts encountered in the engine development stage. After the failure of the Long March 5 Tele-2 mission, the pressure faced by these people became even greater, and they even called the faulty engine problem "the devil".

　　A test team member of the Sixth Academy of China Aerospace Science and Technology Corporation told the reporter that in order to find out the "devil" and destroy the "enemy", the development team has suffered unprecedented hardships, hardships, twists and turns and doubts in the past two years. The experience of tempering, struggling, struggling and tackling key problems is also rare in the history of development. Especially those "demons" who are hidden deep, the tension and complexity of the battle are unprecedented.

　　“‘ Devil ’ It pops up from time to time, blinding the development team’s sight, and even pushing them into the endless abyss of opaque. However, the development team was not intimidated by the darkness and was not defeated. " Zhou Limin said.

　　According to the statistics of the Sixth Academy of China Aerospace Science and Technology Corporation, in the second and third quarters of 2019 alone, the development teams of 11 hydrogen-oxygen engines in Beijing of the Academy worked overtime for 23,000 hours, and finally found out the "devil" hidden in the engine and eliminated the "enemy" who was recalcitrant, eliminating hidden dangers and eliminating faults.

　　Li Dong, the chief designer of the Long March 5 rocket, told the reporter that after the failure of the Long March 5 rocket, after more than 100 days of troubleshooting and positioning, and more than 180 days of experimental verification, the reason for the failure was finally confirmed. After that, according to the conclusion of fault investigation, the development team improved the design of the first-stage hydrogen-oxygen engine, and adopted corresponding improvement measures from the aspects of structure, materials and technology, which improved the adaptability to the flight environment.

　　The cause of the failure was found, identified and improved. Everything seems so smooth.

　　However, new problems have come again.

　　The process of returning to zero is full of twists and turns

　　On November 30, 2018, the improved core-stage hydrogen-oxygen engine had problems during the long-distance test run.

　　Li Dong told reporters that this time the astronauts responded faster. According to the cause of the failure, the development team improved the local weak links of the engine and improved the dynamic strength margin of the structure.

　　On March 29, 2019, the zeroing work and improvement verification of engine test failure were all completed — — The two long-distance test runs passed successfully, and the second problem was solved in this way.

　　But soon, they ushered in the third "encounter."

　　On April 4, 2019, when the final assembly of the Long March 5 remote three rocket entered the final stage, an "abnormal vibration frequency" appeared in the process of analyzing the test data of a core-stage hydrogen-oxygen engine used for subsequent tasks.

　　It can be described as twists and turns, once again verifying that sentence: the road to scientific exploration has never been smooth.

　　"Without a trace of doubt!" Li Dong said that the developers followed the trail and found the crux of the problem — — The local structure of the engine is very sensitive to the complex mechanical and thermal environment, and it is easy to cause resonance. Once excited, it is not easy to decay.

　　In July 2019, the developers completed the structural improvement of the engine and completed more than a dozen large-scale ground tests.

　　At this point, the engine problem that has plagued the Long March 5 for more than two years has finally been investigated.

　　According to the statistics of the First Academy of China Aerospace Science and Technology Corporation, the Long March 5 was defeated by Yaoer on July 2, 2017 and successfully launched by Yaosan on December 27, 2019, which lasted for 908 days and carried out more than 40 key technical tests.

　　After 908 days and nights, I got up again after countless falls. And the biggest "hard bone" — — The hydrogen-oxygen engine has also completed the phoenix bath fire and nirvana rebirth in more than two years.

　　According to Long Lehao, more than 900 days, such an interval — — It is a long time in the history of the Long March rocket to go beyond the period of the follow-up flight after the mission fails. In his impression, there is not even a "return to zero" at such a long interval.

　　"We certainly hope that the interval will be shorter, but scientific research cannot change with subjective wishes." Long Lehao said that the failure of the Long March 5 rocket was due to the failure of a certain engine component under the interaction of complex mechanical and thermal environment — — This problem is deeply hidden, and it does not appear in most cases, but only occasionally. However, once it appears, it is a "disastrous result".

　　In his view, this "zeroing" finally caught this mischievous "devil", although it took a long time, it was worth it.

　　"We’re all suffocating."

　　In fact, it takes more than a few teams to find out the "devil" and "rebuild" the engine.

　　Yan Yong, deputy director of Beijing No.11 Institute of the Sixth Academy of China Aerospace Science and Technology Corporation, told the reporter that the failure to launch the Long March V Remote II rocket pushed the liquid power industry with the reputation of "golden power" to the forefront, and the failure of the first-class high-thrust hydrogen-oxygen rocket engine put the engine development team under tremendous pressure and test. With the help of the strength of the Group and the Sixth Hospital, the Institute has used all effective resources to carry out the zeroing work — — It can be said that this is a "national alliance" to tackle key technical problems.

　　"It’s the first time I’ve seen so many academicians get together!" Lv Wei, the quality supervisor of 11 universities in Beijing, said that he was most impressed by the evaluation. Twenty-five academicians and five university professors came to the site as invited experts to listen to the engine development work and put forward opinions and suggestions. Nearly 60 leading experts in the system also participated in the exchange and discussion.

　　In fact, after the failure of the mission two years ago, many people are also eager to try, looking forward to returning to the "battlefield" and showing their talents.

　　"If setbacks obscure the light of the road ahead, then use the unrepentant heart to light the fire at night!" Chen Jiwei, commander of the launching station system at Wenchang Space Launch Site, told the reporter that there was no frustration and discouragement, and everyone held their breath. All systems and posts rallied from scratch and immediately put themselves into the preparations for the rocket’s go-around.

　　Deduct the process again and again, anticipate and recall one by one, and operate the exercise again and again. The operation of the air compressor of a system in the station is not very stable, and the equipment manufacturer has repeatedly made dozens of improvement tests, but the problem still exists.

　　Many people have advised Chen Jiwei, "it’s not a restrictive factor, it’s almost enough." However, his answer is adamant. "The factors that affect the task must be solved without compromise!"

　　Today, the Long March V has finally won this "turn-over battle", and it has become the most iconic task of China Aerospace in 2019. This is not only because it determines the implementation of major engineering tasks such as the follow-up Chang ‘e V, manned space station and the first Mars exploration, but also because it presents the process of scientific experiments from failure to success to the public in such an intuitive way, which makes people feel moved and amazed.

　　In addition to Qian Xuesen’s sentence, Albert Einstein also had a "golden sentence" that was regarded as a standard by the scientific community. The general idea is that it is not a bad thing for a person to take detours and make mistakes on the road of scientific exploration, and it is not a shame. It is necessary to bravely admit and correct mistakes in practice.

　　Long March 5 did it. China astronauts did it.

　　China Youth Daily China Youth Network reporter Qiu Chenhui

    On the morning of April 24th, "Fujiu" spit for a while, and then circled.

    At 18: 15 on June 9th, the female Yangtze finless porpoise (hereinafter referred to as finless porpoise) "Fujiu" reared in Baiji Dolphin Museum, Institute of Hydrobiology, Chinese Academy of Sciences gave birth successfully, giving birth to a male finless porpoise with a body length of about 70cm and a weight of about 5kg, numbered F9C24, adding a new member to the artificially bred Yangtze finless porpoise family. For more than 10 days, the finless porpoise has been growing well and is currently undergoing a unique "molting" process.

    The dolphin mother "Fujiu" was introduced from Poyang Lake to Wuhan Baiji Dolphin Museum in 2011. She is 15 years old and is in her prime.

    On May 10th, researchers did B-ultrasound in the natural state of water, and "Fujiu" cooperated with the breeder tacitly. Photography Gao Baoyan

    At the beginning of June last year, during the most frequent period of finless porpoise breeding activities, Baibo Dolphin Museum began to monitor Fujiu by B-ultrasound. From June 12, 2023, the staff monitored the discharge of fertilized eggs, the growth and development of finless porpoise embryos, and the birth of finless porpoise. The 362 days of "Fujiu" pregnancy were completely recorded through B-ultrasound monitoring.

    After 12 months of pregnancy, on the morning of June 9 this year, the nursing staff noticed that "Fujiu" began to jump violently and returned to calm after one and a half minutes. Subsequently, it is accompanied by intermittent fast swimming and jumping behavior.

    Through these abnormal movements, the nursing staff judged that "Fujiu" was about to have a baby!

    Accompanied by researchers and nurses, Fujiu successfully gave birth to the finless porpoise F9C24.

    The mother "Fujiu" of the finless porpoise is interacting with the newborn finless porpoise. Photo courtesy of Wuhan baiji dolphin protection fund

    According to Wang Chaoqun, the training director of Baiji Dolphin Museum, after the baby dolphin is born, its umbilical cord connected with its mother’s blood is automatically disconnected due to pulling; Then the dolphin mother "Fujiu" quickly found the child, accompanied her intimately, and quickly started parent-child interaction; On the day of birth, the finless porpoise F9C24 sucked its first breast milk.

    "Fujiu" takes special care of the newborn finless porpoise. At the time of birth, "F9C24" almost hit the wall of the breeding pond several times because of the lack of swimming skills and strength. In order to protect the children, "Fujiu" intimately accompanied the small finless porpoise on the outside, blocking it with his body until it could swim normally.

    The finless porpoise is going through the process of molting. It began to shed its fetal skin a week after birth, and then put on a smoother "coat" to adapt to the changes in the environment.

    This is the second child of Fujiu. On June 27th, 2022, Fujiu successfully gave birth to her first little princess-Jiujiu. In order to let more people know more about the finless porpoise and better participate in the finless porpoise protection, in 2022, Wuhan Agriculture and Rural Bureau, together with Hubei Branch of Xinhua News Agency and Institute of Aquatic Biology of Chinese Academy of Sciences, planned and launched the popular science public welfare action of "witnessing the delivery of the Yangtze finless porpoise". This is the first live webcast of the whole process of finless porpoise delivery in the world, attracting 220 million people to accompany the delivery online. Enthusiastic netizens named the little finless porpoise "Jiujiu" on the spot.

    Hao Yujiang, an associate researcher at the Institute of Hydrobiology, Chinese Academy of Sciences, said that Jiujiu, who is about to celebrate his second birthday, is lively and healthy, weighing 42 kilograms and 1.27 meters long. He is the star finless porpoise in the Baibo Dolphin Museum.

    The fathers of two small finless porpoises are both Taotao, who were born in Wuhan Baiji Dolphin Museum on July 5, 2005. They are the first finless porpoises in the world to reproduce naturally in an artificial environment. These small finless porpoises have become the "second generation" finless porpoises naturally propagated in artificial environment, which has important scientific research value.

    Wang Chaoqun told reporters that the pregnancy cycle of finless porpoise is 12 months. Generally speaking, a female dolphin may breed 7-12 small finless porpoises in her lifetime. Wang Ding, a researcher at the Institute of Hydrobiology, Chinese Academy of Sciences, said that the finless porpoise’s own reproductive ability is still relatively strong, and it can give birth to two babies in three years. In Tianezhou finless porpoise reserve, researchers have observed that some finless porpoises are pregnant again during breastfeeding. (Reporter Jin Wenbing correspondent Deng Xiaojun Peng Bowei Huang Min Liu Jingtuo) (Fan Jiaman also contributed to this article)

    ■ Taotao Accompanying Diary

    Hello, everyone! I am Taotao, the world’s first Yangtze finless porpoise successfully bred in artificial environment.

    Tell everyone a good news! At 18: 15 on June 9, 2024, my third child was born.

    The Baiji Dolphin Museum has arranged a bright and spacious single room and intimate partners for Fujiu during pregnancy.

    Our Yangtze finless porpoise is the only aquatic mammal in the Yangtze River, and it is also a national first-class protected animal. It is known as the "smiling angel", and artificial breeding is one of the important ways to protect us. Now, the river has become clear, and the Yangtze River has gradually recovered its vitality. By 2023, the number of dolphins in our family had risen to 1,249.

    I have lived in Wuhan Baiji Dolphin Museum for 19 years. In 2020 and 2022, I had my son "Hanbao" and my daughter "Jiujiu" respectively. The children’s names imply that the dolphin born in Wuhan is happy and long-lasting.

    Last June, my daughter-in-law, the finless porpoise "Fujiu", was pregnant. During the delivery, I would like to thank the researchers of Baiji Dolphin Museum, Institute of Hydrobiology, Chinese Academy of Sciences for taking good care of her.

    Today, I will expose this visual diary exclusively for everyone and share my joy with everyone who loves finless porpoises.

    Thanks to all the people who care about the finless porpoise! Everyone calls finless porpoises "smiling angels". May there be more and more "smiles" in this world.

    Dolphin Taotao

    Wuhan, June 20, 2024

    (Text/Gao Baoyan)

Just yesterday, the Russian-Ukrainian war lasted for 1000 days.

At first, the whole world should not have expected that this geopolitical conflict would last so long.

From "blitzkrieg" to "protracted war", the peace talks between Russia and Ukraine seem to be quite far away, and it is likely to enter a dangerous new stage.

Yesterday, Russian President Vladimir Putin signed a new version of the nuclear doctrine; Ukraine used American-made missiles to attack targets in Russia for the first time, and the G7 still declared that it would continue to be quite Ukraine.

The global political situation is ups and downs

On February 24, 2022, Russian President Vladimir Putin announced a special military operation in the Donbass region, and the whole territory of Ukraine entered a wartime state and broke diplomatic relations with Russia.

The conflict between Russia and Ukraine officially broke out.

Since then, Russia’s "blitzkrieg" failed, and the timeline of the conflict between Russia and Ukraine began to lengthen, which continues to this day.

Although the war between the two sides was once anxious, Russia was "unstoppable" and Ukraine also launched a big counterattack. However, under the agitation of western forces, it is still difficult for Russia and Ukraine to hold peace talks.

In the early morning of 19th local time, the Ukrainian army used six American Army Tactical Missile System (ATACMS) missiles for the first time to attack targets in Russia.

On the same day, Putin signed a new version of the basic policy of Russia’s nuclear deterrent country. The new policy expands the scope of countries and military alliances where Russia can implement nuclear deterrence.

In the past two years, in addition to the conflict between Russia and Ukraine, many battlefields in the Middle East have also been ignited.

The Palestinian-Israeli conflict, the Iraq-Israel conflict, the lebanon war and the Red Sea crisis … "The powder keg in the Middle East" was ignited at the same time.

Statistics show that since the new round of Palestinian-Israeli conflict broke out on October 7 last year, 43,972 Palestinians have been killed and 104,008 injured in Israeli military operations in the Gaza.

It is noteworthy that this year is also a global election year, and Russia and the United States have successively held presidential elections.

In March this year, Russian President Vladimir Putin was re-elected and began his next six-year presidency, which is also his fifth presidency.

In his inaugural speech, Putin stressed that the interests and security of the Russian people are above everything else, and he will devote himself to safeguarding national unity and stability.

In November, the ups and downs of the American election were settled. Trump will officially take office in January next year and become the 47th president of the United States.

At present, for the current President Biden, there is not much time left for him, because Trump 2.0 declares that he will never wage war.

Therefore, since the end of the general election, the fighting on the Russian-Ukrainian front has become more tense with the naked eye.

Financial market turmoil

Whether it is the war between Russia and Ukraine or the battlefield in the Middle East, it has been stirring the nerves of the global market.

The most obvious is:Global risk aversion is heating up.

In the past two years, gold has skyrocketed. This year, spot gold peaked at $2,790 per ounce, and COMEX gold futures topped $2,800 per ounce.

According to the statistics of the World Gold Council, since 2024, the price of gold has hit a new high for more than 30 times.

Since the outbreak of Russia and Ukraine, the cumulative increase of spot gold has exceeded 37%.

Although the dollar has returned strongly since Trump won the election in November, the price of gold has been adjusted back for more than half a month. However, with the escalation of the conflict between Russia and Ukraine, the price of gold seems to be making a comeback.

Wall Street is now bullish on gold prices, and UBS, Goldman Sachs and Bank of America have said that gold will go further.

UBS analysts said that gold will further rise to $2,950 per ounce by the end of 2026; Goldman Sachs also shouted "buy gold", with a target of $3,000 by the end of next year; Bank of America also said that before Trump took office, he would focus on China and European stock markets and gold.

Safe-haven demand pushed US debt higher, the yield curve leveled off and the panic index climbed.

On Tuesday, the panic index VIX rose 4.94% to 16.35. The yield of US 10-year treasury bonds fell by 0.43% to close at 4.399%, which was 11.4 basis points lower than that of two-year treasury bonds.

Eurozone bonds rose and European stock markets fell to their lowest level since August. The yield of British 10-year government bonds fell by 2.3 basis points to 4.442%, while that of German 10-year government bonds fell by 3.6 basis points to 2.338%.

crude oilOn the other hand, the escalation of geopolitical tensions has supported oil prices, and WTI crude oil futures prices closed slightly higher on Tuesday.

foreign exchangeIn the market, the demand for safe-haven currencies such as Japanese yen and Swiss franc has increased, and the intraday fluctuation of USD/JPY is particularly severe.

In addition, with the impact of Trump 2.0 policy expectations,Virtual currency is also rising.A few days ago, Bitcoin hit another record high, reaching 93,844 US dollars, rising more than 3% in 24 hours.

Jeffrey Ding, chief analyst of HashKey Group, said that Bitcoin stands at $90,000, and there is still room for growth in the future.

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When young people buy a car, they often consider many factors. In addition to the high value, the configuration and control can not be less, and the price should be within their tolerance. Domestic cars have always been concerned, and today is one of them. Let’s look down with Xiaobian.

First of all, from the appearance, the front face of the polar fox Alpha T5 gives people a very simple feeling and looks sporty. Then, the full headlight design was adopted, which upgraded it to a certain level. The car is equipped with LED daytime running lights, automatic opening and closing, adaptive far and near light, delayed closing and so on. Come to the side of the car, the car body size is 4690MM*1936MM*1650MM, the car uses lovely lines, the car side looks very comfortable, with large-sized thick-walled tires, it looks full of sports. In the rear part, the rear looks very simple, and the taillights look very full and lovely.

Sitting in the car, the interior design is dignified and rich in functions. The steering wheel of the car is well designed, equipped with functions such as manual steering wheel up and down+front and rear adjustment, steering wheel heating, etc., which is full of design sense. From the central control point of view, the 15.6-inch central control screen is used for decoration, which makes the interior design quite layered and beautiful. Let’s take a look at the dashboard and seats again. The dashboard of this car presents a calm design style, which is very fashionable and simple. The car adopts leather-like seats, which are wide and thick, further improving the comfort of drivers and passengers.

The polar fox Alpha T5 matches the gearbox, which is 200KW and 360N.m, with good power performance.

The car is equipped with car networking, driving mode selection, remote control key, Bluetooth key, interior atmosphere light, traction control (ASR/TCS, etc.) and other configurations, which fully ensures the convenience and comfort of the car experience.

The polar fox Alpha T5 introduced today is not only eye-catching in space, but also has a mainstream configuration, and there is nothing to be picky about driving experience and space experience. If you plan to buy a car and the budget is not particularly adequate, this model is worth considering.

　　After the development of carburetor, single-point EFI, multi-point EFI and multi-point sequential EFI, many luxury car manufacturers have made progress in the field of direct injection.

　　The direct injection engine is different from the ordinary engine in the fuel injection mode. The fuel is injected into the cylinder directly instead of being mixed with air in the intake manifold. With the accurate calculation of the ECU control unit of the engine, this combustion mode can control the fuel injection amount according to the working conditions of the engine, and the performance, fuel consumption and emissions of the engine can be optimized accordingly.

　　The earliest direct injection system was invented by Bosch Company in 1950s, and was first applied to Mercedes-Benz SL300 in 1955. However, it was gradually forgotten because there was no mainstream development trend at that time. It was not until 1996 that the direct injection gasoline engine reappeared in the market. Mitsubishi Corporation of Japan introduced their GDI direct injection technology into Galant’s 4G93 engine and sold it in the Japanese market. Subsequently, Mitsubishi Carisma equipped with this technology also entered the European market, and today’s "direct injection fever" developed from this.

　　Facing the problems of energy and environment and the development of engines, Volkswagen, Mercedes-Benz, BMW and Cadillac have invested a lot of manpower and material resources to explore new technical fields. In the domestic market, Volkswagen and Audi’s FSI technology has become a star product in this category, but with the arrival of Cadillac’s new CTS, BMW X6xDrive50i and other models, Volkswagen FSI engines have ushered in more competitors. At present, the mainstream models with direct injection technology in the domestic market are only some high-end models, but we have reason to believe that with the development of technology, this technology beneficial to you, me, energy and the environment will be gradually popularized.

New CTS and its SIDI direct injection engine

　　Universal SIDI

　　SIDI all-aluminum dual-mode intelligent direct injection engine adopts universal third-generation direct injection technology. Among them, dual mode refers to homogeneous combustion and stratified combustion. SIDI engine can automatically adopt stratified lean combustion mode when the throttle is half open and automatically enter homogeneous combustion mode when the throttle is full. The automatic conversion of these two modes will directly improve the effective utilization rate of fuel. The method used by general SIDI to realize layering is also different from the eddy current method of Volkswagen, and the controllable oiling process is the key step to realize layering oiling.

　　Representative model: Cadillac CTS3.6L flagship high-performance version

　　Cadillac CTS3.6L flagship high-performance version is equipped with this 3.6LSIDI engine. Compared with the previous generation CTS3.6L engine, the maximum power and torque of this SIDI engine have increased by 15% and 8%, reaching 229kW and 374N·m respectively. Due to the introduction of direct injection technology, the fuel consumption of this engine is also reduced by 3% compared with the previous generation engine, and the hydrocarbon emission is also reduced by 25% during cold start.

　　Volkswagen FSI

Volkswagen FSI has a high reputation in China.

The nozzle of FSI is below the intake pipe, and the nozzle placement of each pair is different.

　　Volkswagen was one of the first manufacturers to introduce direct injection technology into China. Nowadays, FSI (Fuel Ratio Injection) has become a familiar word for consumers. FSI refers to stratified fuel injection, which is a direct injection technology for gasoline engines. At the beginning of FSI, this technology had stratified lean combustion, but it was later cancelled for various reasons, and only the direct injection technology was retained. Audi used vortex effect to realize stratified lean combustion before. Although this technology was cancelled, the remaining direct injection technology also performed well in terms of power and fuel economy. Compared with the traditional engine that directly injects fuel into the intake manifold, the FSI fuel direct injection engine can significantly improve the power, make the output torque and power higher, and reduce the fuel consumption rate by 15%.

　　Representative model: Audi A6L3.2FSI

Audi A6L 3.2 has not only quattro four-wheel drive technology, but also FSI.

　　At present, compared with the previous 3.0LV6 engine, the 3.2LFSIV6 engine equipped on the Audi A6 model has a maximum power of 26kW and a maximum torque of 30N·m and 330N·m, and the fuel efficiency has also been significantly improved. It is a highlight of FSI technology to combine engine power and fuel economy well.

　　Bmw HPI

From this picture, we can clearly see the direct injection technology structure of BMW.

　　Many people don’t know about BMW’s high-precision injection system, HighPrecisionInjection. In fact, it is an integral part of BMW’s EfficientDynamics system and an important part of BMW’s improvement in power and fuel economy. The precise piezoelectric nozzle located between the intake valve and the spark plug can provide a pressure of up to 200Bar to fully atomize gasoline and complete the process of injecting it into the combustion chamber in 0.14 milliseconds, so that the fuel economy pursued by engineers is completely guaranteed. BMW does not add stratified combustion technology to this system, but achieves the purpose of improving fuel consumption rate through fuel atomization.

　　Representative model: BMW X6xDrive50i

BMW X6 xDrive 35i has entered China, and X6 xDrive 50i will meet domestic consumers soon.

　　The X6xDrive50i, which is about to enter the domestic market, is equipped with this direct injection system, and its power performance is also very remarkable because of its dual turbocharging system. Its maximum power is 300kW, its maximum torque is 600N·m, and its comprehensive fuel consumption is 12.5L/100km (it is worth noting that this is the data of a 4.4LV8 twin-turbo engine).

　　Mercedes CGI

The highlight of Mercedes-Benz CGI lies in its high-pressure piezoelectric nozzle technology.

　　Compared with Volkswagen and BMW, Mercedes-Benz’s publicity in this respect is somewhat low-key, but this does not mean that this German company is inferior to its competitors in this respect. Mercedes-Benz has been committed to the research on vehicle power and fuel economy, and CGI (Hierarchical-Charged Line Injection) is their research achievement. In 2006, Mercedes-Benz launched the 350CGI engine, which was the first time to apply the piezoelectric nozzle to the direct injection technology of gasoline engines. Compared with the popular mode of using vortex to produce stratified effect, Mercedes-Benz solves this problem well by using high-pressure piezoelectric nozzle, and forms the required stratified combustion mode by using the spray generated by high pressure. It is also for this reason that this engine effectively reduces fuel consumption by as much as 10% compared with the previous engine.

　　Representative model: Mercedes-Benz CLS350CGI

At present, it seems that Mercedes-Benz CLS 350 CGI has little fate with domestic consumers.

　　The maximum power of ordinary Mercedes-Benz CLS350 is only 200kW, the maximum torque is 350N·m, and the fuel consumption per 100 kilometers is 10.1L. Mercedes-Benz CLS350CGI has reached the maximum power of 215kW and the maximum torque of 365N·m, and the fuel consumption per 100 kilometers is 9.1L That is to say, after adding CGI technology, the maximum power, maximum torque and fuel consumption rate of the engine have improved by 7.5%, 4.3% and 10% respectively. Therefore, it can be seen that Mercedes-Benz is not inferior in this respect. After the successful appearance of CLS350CGI in 2006, Mercedes-Benz applied this engine to E-CLASS, S-CLASS and other models, but these models have not yet met with domestic consumers.

　　Xinhua News Agency, Beijing, August 10 Title: A trip to the great road, the world is for the public – an interpretation of the world under the long-term rule of the Communist Party of China

　　Xinhua News Agency reporter Ye Shuhong

　　In today’s world development landscape, there are two distinct contrasts: on the one hand, the world’s economic recovery has been sluggish after the international financial crisis, and the Western world has fallen into an unprecedented institutional crisis; on the other hand, China’s economic and social development achievements have been remarkable, indicating a bright future for the path of socialism with Chinese characteristics.

　　The Chinese plan and the Chinese way of thinking have become hot topics around the world. Among many inquiries, American China expert Robert Kuhn has concluded that the key to the Chinese miracle lies in the extraordinary leadership demonstrated by the Chinese Communist Party’s long rule.

　　Looking at political parties around the world, only a handful have been in power for more than 30 consecutive years. The Communist Party of China has been in power for 68 years and led the Chinese people to achieve brilliant achievements. It has written a world-renowned "China policy" for the long-term governance of political parties.

　　Advanced theory, road fit – advanced theory combined with specific national conditions to explore a path of socialism with Chinese characteristics suitable for its own development

　　In 2008, the financial tsunami swept the world. In the same year, according to data from the German publishing house Karditz, sales of "Das Kapital" nearly tripled and were temporarily out of stock. "Rediscovering Marx" has become a new voice in the West’s reflection on the crisis. American economist Robert Heilbroner lamented that to explore the future of human society, we must learn from Marxism.

　　Marxism reveals the universal truth of the development of human society. The Communist Party of China has always adhered to Marxism as the guiding ideology and made it the ideological core that unites hundreds of millions of Chinese people.

　　From leading the national independence and liberation struggle during the revolutionary period to exploring the road to national prosperity and national strength in the era of reform and opening up, the Communist Party of China has combined Marxism with China’s reality and produced significant theoretical achievements in the sinicization of Marxism.

　　Since the 18th National Congress of the Communist Party of China, the Party Central Committee with the supreme leaders as the core has closely focused on realizing the goal of "two centenary years" and the Chinese dream of the great rejuvenation of the Chinese nation, raised the flag and oriented, and promoted the overall layout of "five in one" and the strategic layout of "four comprehensive".

　　Gennady Zyuganov, chairperson of the Central Committee of the Communist Party of the Russian Federation, said frankly: "After witnessing China’s development with my own eyes, it is certain that China’s incredible leap-forward development is based on never giving up the direction of socialist development."

　　The direction determines the road, and the road determines the fate. In the late 20th century, some countries copied the Western model and transformed their economies with neoliberalism and the "Washington Consensus". The result was political instability and economic recession, and the lesson was profound.

　　The Communist Party of China has always represented the fundamental interests of the vast majority of the Chinese people, rather than the special interests of any interest group

　　In April this year, Javier Miranda, chairperson of Uruguay’s ruling "Broad Front", led a delegation to the Nujiang River in Yunnan Province to investigate China’s targeted poverty alleviation. He was deeply impressed by the intensity and results of the "Fifth-level Secretary of the Communist Party of China’s poverty alleviation".

　　As chairperson of Uruguay’s ruling party for three consecutive terms, Miranda knows the difficulties of long-term governance. "The most important responsibility of the ruling party is to maintain fairness and justice in society. In this regard, the Chinese Communist Party has set an example for ruling parties in other countries."

　　Adhering to the people-centered development concept, insisting that development is for the people, development depends on the people, and the fruits of development are shared by the people, and continuously enhancing the people’s sense of gain on the basis of economic development is the key to winning the support of the masses for the Communist Party of China.

　　The people are the foundation of the state, which is the traditional Chinese governance wisdom.

　　From Mao Zedong’s "Long live the people" to the Supreme Leader’s "The people’s yearning for a better life is our goal", serving the people wholeheartedly and always representing the fundamental interests of the broadest masses of the people, rather than the special interests of any interest group, is the foundation of the long-term governance of the Communist Party of China.

　　Ayken Konurov, secretary of the Central Committee of the Communist People’s Party of Kazakhstan, pointed out: "The political experience of leading cadres of the Chinese Communist Party starts from the grassroots level. They are familiar with the masses, understand the suffering of the people, and always put the interests of the people first. This is the fundamental difference between the Chinese Communist Party and the ruling parties in western countries."

　　In today’s world, with rapid economic and social development and changes, emerging classes continue to emerge, and traditional ruling parties are generally facing the challenge of shrinking their social foundation. The positioning of always representing the fundamental interests of the broadest masses of the people makes the representation of the Communist Party of China unparalleled by other political parties.

　　As the ruling party, the Communist Party of China has kept pace with the times to unite and attract advanced elements from all walks of life to join it, better build consensus, and seek the greatest common denominator that the Communist Party of China represents the interests of the people of the whole country. This has enabled the long-term ruling social mass base to be continuously consolidated and expanded.

　　Selecting talents and being able to govern the party strictly – the reason why the Communist Party of China can remain invincible is inseparable from its super self-innovation and self-purification capabilities

　　Are China’s leaders really better than ours? asks the American "Politics" website.

　　Whereas the Chinese Communist Party’s leading cadres are selected through the most rigorous selection process, US lawmakers can enter Congress by grandstanding to voters. After some comparison, the website Politics asked: "Can our elected leaders really meet their standards?"

　　An article in the US magazine Foreign Affairs pointed out that the Chinese Communist Party’s cadre selection and election mechanism is based on performance and talent, and its effectiveness "may be beyond the admiration of even the most successful commercial companies."

　　Singapore’s founding prime minister, Lee Kuan Yew, once pointed out in his interpretation of China’s development miracle that it is the most outstanding among the more than one billion Chinese who are at the helm of the country.

　　The key to good governance is to select the best and appoint the best. The Communist Party of China has always attached great importance to this, and has always regarded the selection and employment of people as a key issue related to the cause of the party and the people. "The key to conducting a great struggle with many new historical characteristics lies in the party and the key lies in the people." This is an important statement of the Supreme Leader.

　　Meritocracy can make the Communist Party of China’s organizational body full of vitality, and strict governance of the party endows the body with a strong self-purification force. From the pre-existing disciplinary supervision mechanism to the central inspection work becoming a strategic institutional arrangement for intra-party supervision, the Communist Party of China’s self-supervision efforts continue to escalate, providing a strong institutional guarantee for maintaining organizational purity.

　　Since the 18th National Congress of the Communist Party of China, the Party Central Committee with the supreme leader as the core has insisted on rectifying the four winds, fighting "tigers" and "flies", using the rigidity of "law without exception" and the courage of "strong men breaking their wrists" to stimulate and promote righteousness, so that the people can see the determination and ability of the Communist Party of China to solve its own problems, and the hearts of the party and the people have been inspired.

　　Gustavo Girardo, director of the Asia and Argentina Research Center in Argentina, said: "The Chinese Communist Party has a strong ability to self-purify and correct itself. Once institutional loopholes or organizational problems are discovered, measures will be taken to correct them in a timely manner. The strong anti-corruption campaign carried out by the top leader is a good example of the Chinese Communist Party’s courage to self-purify."

　　Strategic wisdom and a long-term vision – long-term stability and ambition have enabled the Communist Party of China to develop strategic planning capabilities that are the envy of ruling parties in many countries

　　Western-style democratic countries have a long history of internal conflicts. The "government-house dispute" and the "veto game" have caused major policies to be delayed for many years; special interests use lobbying outside the hospital to kidnap decisions; the rise of different political parties to power has brought about national policies "turning biscuits" and causing huge depletion of resources.

　　Professor Huang Xianghuai of the Central Party School of the Communist Party of China believes that the West has the term "election economic cycle", but the Chinese Communist Party has ensured the long-term stability of the country’s major policies in its governance practice.

　　Thanks to its long and continuous rule, the Communist Party of China has developed a strategic planning ability for economic and social development. The five-year plan for the national economy is the most typical example. From the "First Five-Year Plan" to the "13th Five-Year Plan" to build a moderately prosperous society in an all-round way, the Communist Party of China has made unremitting efforts for more than 60 years to connect the most ambitious modernization process in human history.

　　"Our current system cannot implement something like a five-year plan because we cannot hold politicians accountable," wrote an article reflecting on the western system in Forbes magazine.

　　Robert Engel, the US economist and Nobel laureate, said: "While China is making five-year plans for the next generation, the US is only planning for the next election."

　　"China is full of confidence in the future because they have planned every step of their way and will not give up the great goal of benefiting all the people. China’s strategic planning is not limited to a five-year plan, and Chinese leaders have put forward two centenary goals for a longer period of time," Zyuganov said. (Participating reporters: Hu Xiaoguang, Wang Lili, Gui Tao, Zhou Liang, Ni Ruijie)

　　[spotlight]

　　5G, big data, Internet of Things and artificial intelligence are widely used — —

　　Cities become more "smart"

　　Guangming Daily reporter Liu Kun

　　Enterprise employees work in the cloud, brainstorm in video conferences, residents show their health codes when they enter the community and visit the supermarket, and doctors use 5G and artificial intelligence for remote consultation and treatment … … Since the outbreak of the COVID-19 epidemic, many new changes have taken place in our lives, and our city has become more "intelligent".

　　Nowadays, new technologies such as 5G, big data, Internet of Things and artificial intelligence are developing continuously, which are widely used in the process of building new smart cities in China, giving birth to a new digital, networked and intelligent public service model and a new concept of urban governance, bringing many conveniences to people’s production and life. In the future, how to better promote the construction of new smart cities?

　　The staff monitors the tourism situation in real time through the smart tourism big data platform. Xinhua news agency

　　Health codes and information platforms are of great use.

　　During the epidemic period, the "e Longyan" platform in Longyan City, Fujian Province developed and launched the COVID-19 prevention and control information service program, and launched a number of related services, so that citizens can quickly query information, conduct online free clinics, and report epidemic clues in time. The questions reflected by the citizens are uniformly summarized on the 12345 platform. If the platform can reply, it will give an immediate reply. If the professional questions cannot be answered, it will be transferred to the relevant departments for processing in time.

　　At 19: 20 on June 30, Ms. Yang, who lives in Daxing, Beijing, returned to the community after work and was showing the Beijing health code to the property security personnel. After confirming that "nothing unusual", she was allowed to enter. "I have to show my health code four or five times a day now, which is very convenient to use and conducive to epidemic prevention and control." She said.

　　On April 8, Wuhan, which was closed for 76 days, reopened the passage from Han to Hubei. In the early morning of that day, many passengers came to Wuhan Railway Station. They wore masks and took the Hubei health code "Green Code" and took the high-speed train one after another to all parts of the country. For them, "green code" means "passport" to return to work. Since the beginning of this year, health codes, epidemic prevention maps, information platforms, intelligent temperature screening and early warning systems, etc. have become a powerful means to fight the epidemic.

　　Wang Yukai, a professor at the Central Party School (National School of Administration) and a member of the National Informationization Expert Advisory Committee, said that China has made great strategic achievements in epidemic prevention and control, which is closely related to China’s promotion of smart city construction in recent years. Since the outbreak, local governments have released information to the public in a timely manner through the government information platform, releasing local epidemics, so that the public can know the situation in time and improve their preventive ability.

　　Wang Yukai said that in the construction of smart cities, we have established a strong data base, which was of great use during the epidemic. The government has a large number of public data, such as population database and geographic information database. Telecom operators master a large amount of data through mobile phone real-name registration system; Internet companies also have massive data by providing market services and social services. These different types of data provide support for the traceability of the epidemic, the tracking of the transmission chain, and the group prevention and control.

　　"If there is no smart city construction, we can’t hold so many video conferences today, there can’t be tens of millions of enterprises working online, and there can’t be hundreds of millions of students taking classes online." Gao Xinmin, a member of the National Informatization Expert Advisory Committee, believes that during the epidemic, the information sharing and service platform created by the government played an important role. Internet companies provided a lot of intelligent services around the normal operation of the city and the living needs of the people, which increased the flexibility of economic and social operation and improved the city’s impact resistance.

　　At present, what is the current situation of smart city construction in China? According to some studies, the construction of smart cities in China has generally gone through four stages: the first stage is the exploration and practice period. From the end of 2008 when the concept of "smart city" was put forward to August 2014, various departments and localities promoted the construction of smart cities according to their own understanding, which was relatively scattered and disorderly; The second stage is the normative adjustment period. From August 2014 to December 2015, the Inter-Ministerial Coordination Working Group for Promoting the Healthy Development of Smart Cities was established at the national level. All departments stopped working alone and began to coordinate and guide the construction of local smart cities. The third stage is the strategic attack period. From December 2015 to December 2017, the concept of a new smart city was put forward and upgraded to a national strategy, focusing on promoting the integration and sharing of government information systems, breaking information islands and data segmentation; The fourth stage is the period of all-round development. Since the 19th National Congress of the Communist Party of China was held, the construction of new smart cities in various places has been accelerated, and the construction achievements have gradually extended to districts, counties and rural areas.

　　Experts said that at present, the construction of smart cities in China has achieved positive results. According to statistics, all cities above the sub-provincial level and more than 89% cities above the prefecture level have proposed to build smart cities. While releasing the overall action plan for implementing smart cities, all provinces and cities are constantly promoting the practice in specific fields such as "smart education", "smart medical care" and "smart transportation", and exploring the key points and development paths suitable for the construction of local smart cities. After years of construction and innovative development, a number of innovative applications such as "urban brain" and Internet hospital have emerged, which have provided a model for the construction of global smart cities in some fields.

　　In Tianjin Haier washing machine interconnection factory, the staff are checking the parts. Xinhua news agency

　　Data islands and fragmentation still exist.

　　Experts said that on the whole, China’s new smart city construction has achieved positive results, but it also faces problems such as weak top-level design, insufficient linkage between urban data integration and governance, uneven development between urban and rural areas, and the formation of smart city development ecology, which needs to be targeted. Make improvements.

　　Where does the "wisdom" of the city come from? From the data.

　　The essence of the new smart city is to use the new generation of information technology to reshape and rebuild the city, and use the attributes of smooth flow and open sharing of data resources to force the unreasonable management system, governance structure, service model and industrial layout of the city to become more reasonable, optimized, transparent and efficient. At present, in the process of building smart cities in China, data islands and fragmentation still exist.

　　"In response to the epidemic, in some places, data can’t be shared and departments are fragmented. Some business systems we have built lack collaborative functions. These problems have exposed many shortcomings in the construction of new smart cities in China." Wang Yukai said, how to make further efforts in these areas, so that smart cities can better serve the people and truly embody people-centered, is the direction of our future efforts.

　　"Smart cities have developed to today, paying more and more attention to the role of data and data value chain." Gao Xinmin said that the essence of the "urban brain" is to gather data from all aspects of the city, and make intelligent decisions through artificial intelligence analysis and calculation. At present, the biggest bottleneck in the construction of "urban brain" lies in the data convergence. The standards and interfaces of multi-source and inter-departmental data in different information systems are different, and the data circulation mechanism is unclear and the process is not smooth.

　　Gao Xinmin suggested that to realize data sharing, first of all, there should be a technical framework that can realize data interoperability, and on this basis, there should be rules and system design. Under the principle of respecting security, sovereignty and demand orientation, once there is demand, a data resource pool can be built quickly, supporting specific applications in time and at low cost, and maximizing data value.

　　Shao Guoan, deputy director of the Information Collaborative Innovation Committee of China Informatization Promotion Alliance, said that in the process of building a new smart city, data standardization is necessary. The data should be classified and managed. For example, key sensitive data such as citizen’s ID number, mobile phone number, name and home address should be encrypted and stored, and other data such as location information can be partially opened and managed as needed.

　　In the future, we should pay equal attention to technological and institutional innovation.

　　Recently, Digital China Holdings Limited signed the Weihai Smart City Project. "We will work hard in Weihai." Guo Zhengli, chief operating officer of Shenzhou Holdings, said that it is planned to build Weihai Smart City Operation Integrated Management Center and Weihai "Urban Brain" with "number" and "intelligence" as the core and make full use of emerging technologies such as Internet of Things, big data and artificial intelligence in three years to promote intelligent transformation in transportation, medical care, cultural tourism and education.

　　"Better city, better life", and beauty is inseparable from wisdom.

　　Someone once looked forward to the future life like this: driverless cars move forward smoothly under the guidance of intelligent transportation systems; After ordering online, drones and logistics robots will deliver express delivery in time; Before leaving work, the smart home system will turn on the air conditioner and air purifier in advance, and prepare a suitable and fresh home environment … … Experts believe that in the future, in a new smart city, these scenarios will become commonplace.

　　Zhang Yansheng, chief researcher of China International Economic Exchange Center, believes that in the future, smart city construction should be deeply integrated with the development of productive services, life services and public services to gather global talents; It is deeply integrated with digital technology, digital format and digital innovation to promote the intelligent, automated and networked development of the real economy. At the same time, we should pay attention to the international situation and turn crisis into safety and opportunity in the great changes; We must make up our minds to build and improve the development ecology with independent intellectual property rights, brands and modern industrial systems.

　　"The driving force for the development of smart cities comes largely from the needs of the new generation." Zhang Yansheng said, from "Millennials" to "Generation Z" to "α Generation ",their different needs for a better life will push the construction of smart cities to a new level; At the same time, they will also become a new force to promote the high-quality development of smart cities. At the same time, we can’t ignore the vulnerable groups who are easily marginalized in the construction of smart cities. We should respond to their concerns in time and guarantee their rights and equal development opportunities.

　　Experts suggest that in the long run, to promote the development of new smart cities in China, we must pay equal attention to technological and institutional innovation. Strengthen the top-level design of smart cities, and introduce the overall planning or construction guidance of new smart cities at the national level as soon as possible; We will improve the new digital infrastructure, vigorously develop smart pipe networks and smart water services, promote the application of smart lampposts and smart manhole covers, promote the intelligentization of municipal facilities, accelerate the establishment of an Internet of Things perception system for urban components, and improve the digital level of cities.

　　At the same time, promote the fairness and inclusiveness of public services, establish a public service information system with cross-departmental and cross-regional business collaboration, joint construction and sharing, and explore innovative service models for education, employment, social security, pension, medical care and culture; Deepen the application of urban data fusion, and build an efficient and intelligent urban hub and transparent government; Optimize the ecology of new smart cities and release the vitality of urban data elements through institutional and institutional innovation.

　　At the just-opened Beijing Auto Show, its second production car made its debut. The new car is positioned as a medium-sized coupe, which will compete with models such as Krypton 007. It is reported that Extreme Vietnam 07 is expected to start delivery in the second half of 2024.

　　Extreme Yue 07 is the second model of Extreme Yue, which continues the design genes of the extreme Yue family. The overall lines are smooth and dynamic, and the overall proportion is also very harmonious. In terms of details, the low wind resistance wheel rim is equipped with a small-sized exterior rearview mirror and a hidden door handle, which can help the new car reduce the wind resistance. The front face of the new car adopts the common closed design of electric vehicles, and the integration of the front part is very strong. At the same time, it brings a good three-dimensional sense through the ups and downs of the lines, and the smooth daytime running lights are very chic.

　　The long and narrow through taillights at the tail are simple and durable, and the Y-shaped treatment on both sides echoes the headlight group, which has good recognition. The tail is also designed with a liftable electric tail, which improves the sports properties.

　　As for the interior, referring to the previous information, the new car adopts an embracing interior with colorful atmosphere lights, the steering wheel adopts a semi-radial design, and the car is equipped with a penetrating screen. The interior of the car has a very simple atmosphere, which is in line with the current market trend. Extreme Yue 07 is equipped with intelligent AI pixel headlights and voice functions inside and outside the car, allowing users to communicate and express their emotions humanely with AI intelligent partner SIMO.

　　Extreme Yue 07 also has outstanding performance in intelligence. Large-scale penetrating screen, 8295 chip and voice interaction system supporting AI algorithm will all appear on Extreme Yue 07. This means that car owners will be able to enjoy a smarter and more convenient technology experience. What’s more commendable is that Extreme Yue 07 will be upgraded in the form of "Yuegeng" at the software level to ensure that car owners always have the latest and most powerful functions.

　　The new car will still adopt a pure vision scheme to build a smart driving system. Extreme Vietnam is also one of the few domestic manufacturers that can realize the brand of NOA in urban areas without relying on lidar. Compared with lidar, the pure vision scheme will cost less, but it puts forward higher requirements for software. It is reported that after the new car is listed, the intelligent driving system can realize the national opening. This is the second brand that can be opened all over the country after Huawei.

　　In terms of power, the new car will be driven by pure electricity, and the parameters of power have not yet been announced. With reference to Pole Crossing 01, the maximum power of single motor version is 200kW. The maximum power of the dual-motor version is 400kW. From the point of view of battery life, the cruising range of CLTC of single motor +71.4kWh lithium iron phosphate battery is 550km. Single motor +100kWh ternary lithium battery has a cruising range of 720km under the comprehensive working condition of full charge CLTC. Dual-motor +100kWh ternary lithium battery has a cruising range of 660km under the comprehensive working condition of full charge CLTC.

For a long time, people always associate China brand cars with the word "cheap", but in recent years, China automobile brands have developed rapidly. It’s a medium-sized car. I don’t know how much you know about it. Let’s take a look at it together.

Let’s take a look at the appearance of the red flag H6 first. The front style of the red flag H6 is very avant-garde and looks sporty. Coupled with the domineering headlights, it looks very full. The car is equipped with LED daytime running lights, front fog lights, automatic opening and closing, adaptive far and near light, delayed closing and so on. Coming to the side of the car, the size of the car body is 4990 mm * 1880 mm * 1455 mm. The car uses exquisite lines, giving people a very dynamic feeling. With large-sized thick-walled tires, the overall visual effect is very cold. In terms of the rear end, the rear end looks more comfortable, the taillight style is more stable, and the overall look is very delicate.

When I came to the red flag H6 car, the interior design was lovely, which highlighted the hierarchical effect. The car looks very good outside the steering wheel, made of real leather, carbon fiber/suede, and has a high palm fit. Take a look at the central control. The car is equipped with a simple touch-sensitive LCD central control screen, which makes the interior design quite layered and looks very domineering. The dashboard and seats give people a good feeling, too. Let’s take a look. The dashboard design is remarkable and looks domineering. The car uses a leather /Alcantara mixed seat, which is wrapped in place, with exquisite materials and comfortable ride.

Hongqi H6 is matched with an automatic manual transmission (AT) gearbox, with an acceleration time of 6.8s per 100 kilometers, which has good power performance and is completely OK for daily use.

The overall performance of the trunk space of Hongqi H6 is excellent, with regular shape, which is convenient for people to take their luggage. In addition, the car is equipped with fatigue warning, anti-lock braking (ABS), LED daytime running lights, brake assist (EBA/BAS, etc.), braking force distribution (EBD) main driving airbag, co-pilot airbag, knee airbag, side airbag curtain, front side airbag and other safety configurations.

Such a car with the right price is enough to meet the daily practical needs, and it doesn’t take much thought to maintain it at ordinary times, and the cost performance is good. If you are interested, you might as well experience it.