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 May 22, the first official live broadcast of Lynk & Co 08 Expressway NOA. That afternoon, Mu Jun, deputy general manager of Lynk & Co., Ltd., and Zhao Yi, founder of AutoLab, drove Lynk & Co 08., Ltd.
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　　Recently, Lynk & Co 08
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　　Huashan A1000 chip performance

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　　In the intelligent competition of automobiles, NOA is one of the key technologies in the field of intelligent driving. Based on Huashan series chips and Wudang series chips, Black Sesame Intelligent provides cost-effective NOA solutions for OEMs and Tier1.

　　Huashan A1000 can provide vehicles with high-speed NOA pilot driving assistance, APA, RPA and other more than 20 ADAS function development. Based on this chip, Black Sesame Intelligent has realized the BOM cost control of the travel and parking integrated domain controller supporting 10V (camera) NOA function under the condition of 50-100T physical computing power within 3,000 yuan.

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    On March 12th, China Star Double Flagship staged a wonderful and exciting extreme challenge in Sanya. During the activity, China Xingshuang Flagship carried out three extreme challenges, namely, soaring in corners, seesaw at high altitude and steel Weiya, which showed the performance, safety and quality of Geely CMA architecture system.

    At the event site, Fan Junyi, general manager of Geely Automobile Sales Company, announced that Chiu Man-Cheuk had become the "China Star Ambassador", and officially announced that the market guidance price of Xingyue L 8AT two-wheel drive flagship model was 168,200 yuan, providing users with another brand-new choice.

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    In the "steady" trick-steel Weiya challenge, the gap data of three points of Xingrui car door at rest are measured at first, which are 3.4mm, 3.5mm and 3.4mm respectively. During the challenge, the B-pillar on one side of Xingrui is connected with the crane, and another Xingrui is suspended through the suspension of the front and rear cars. The B-pillar connected with the crane bears 3T load, and finally the vehicle is suspended for swing test. After the challenge, the data of the three points of Xingrui are 3.4mm, 3.6mm and 3.5 mm. After comparison, there is only a slight change of 0.1mm before and after suspension, and the challenge is successful.

    Geely CMA architecture, with forward-looking technology and R&D and manufacturing standards, has five qualities of safety, health, intelligence, performance and energy saving, and is the core of creating "value competition" in the era of comprehensive architecture of Geely 4.0. With the three core values of CMA architecture, China Xingshuang flagship has been selling well since its listing, and the cumulative sales volume has exceeded 580,000. In the future, Geely brand will continue to promote product-level innovation with CMA architecture, and drive the overall breakthrough of the brand with flagship products.

CCTV News:CCTV reporters learned from the State Sports General Administration that from this year to 2020, China will further promote the all-round development of China Wushu, focusing on social Wushu, competitive Wushu, international promotion, Wushu culture, Wushu education, Wushu research and Wushu industry, building three pillars of Wushu, Wushu ceremony and Wushu morality, developing three fields of traditional Wushu, competitive Wushu and Wushu industry, and doing a good job in Wushu education and Wushu research. Serve the amateur, professional and professional groups of Wushu, give full play to the four functions of spreading Wushu skills, inheriting Wushu culture, spreading Wushu spirit and conveying the concept of healthy life, promote the healthy, comprehensive, coordinated and sustainable development of Wushu, and contribute to building a well-off society in an all-round way and building a healthy China.

Zhang Qiuping, director of the Wushu Management Center of the State Sports General Administration and chairman of the Chinese Wushu Association: As the Chinese Wushu Association and the Wushu Management Center of the State Sports General Administration, we should adapt to the new situation of Wushu development. First, we should provide more Wushu services to the society on the public sports service system. Because there are many kinds of martial arts in China, on the one hand, we should inherit it well, on the other hand, we should innovate, and combine the traditional with the modern to adapt to all kinds of people. It is necessary to increase the supply of Wushu products in the supply-side reform. Provide more fitness services and sports popularization activities. At present, our primary task is "mass Wushu". In addition to providing more sports service activities on the supply side, our Wushu sports should always do a good job of "six advances", that is, entering schools, communities, towns, enterprises, institutions and military camps.

According to the National Fitness Plan recently issued by the State Council, by 2020, people’s awareness of physical fitness will be generally enhanced, and the number of people taking part in physical exercise will increase significantly, with 700 million people taking part in physical exercise once or more every week and 435 million people taking part in physical exercise regularly. Zhang Qiuping introduced that in the development of overall fitness, Wushu, as the first of China’s four national quintessences, is also a popular local sport, which will play an important role.　

Zhang Qiuping, director of the Wushu Sports Management Center of the State Sports General Administration and chairman of the Chinese Wushu Association: What we want to grasp is the education, inheritance and excavation of Wushu, including culture. Wushu is now more than just a sport. There are so many sports events in the world. Although Wushu has not been included in the Olympic Games, its popularity has been increasing. This reason is that Wushu is China’s own sport. It is not only a sports concept, but also a cultural concept. Therefore, we should explore the culture and serve the national fitness.

　

It is understood that from this year, the state will vigorously promote the popularization of social martial arts, organizations at all levels, folk martial arts activities, people’s martial arts fitness and other activities to ensure a steady increase in the number of martial arts practitioners, so that the number of martial arts practitioners will reach 10% in five years. Among them, we will focus on promoting martial arts education in schools, strengthen cooperation with the Ministry of Education, encourage and support graduates majoring in martial arts to teach in primary and secondary schools, further optimize the structure of martial arts teachers, offer martial arts courses extensively in primary and secondary schools and universities across the country, and strive to increase the number of young people practicing martial arts by 10% year by year.　

Huo Zhenhuan, Vice Chairman of the International Wushu Federation, Chairman of the Asian Wushu Federation and Chairman of the Hong Kong Wushu Federation, recently visited the China Wushu Association.

Awarding prizes to the award-winning hometown of martial arts

Since the first selection of "National Wushu Hometown" in 1992, the work of Wushu Hometown has been solidly promoted. In particular, during the Twelfth Five-Year Plan period, remarkable achievements have been made in the work of Wushu Hometown, which has played an irreplaceable role in promoting the socialization and marketization of Wushu, inheriting Wushu culture and cultivating reserve talents. The counties and municipal governments where Wushu townships are located have begun to go beyond the perspective of sports, make full use of local Wushu resources and brand advantages, attach great importance to the work of Wushu townships from the strategy of promoting local economic development and social progress, and regard "National Wushu Township" as a characteristic business card for urban development.

　

Zhang Qiuping, director of the Wushu Sports Management Center of the State General Administration of Sport and chairman of the Chinese Wushu Association: After 23 years of exploration and development, the construction of the hometown of Wushu has gradually formed a development model with the government as the leading factor, the association as the main body, the cooperation of various departments and the participation of the whole society. This model has improved the brand influence of the hometown of Wushu in the field of Wushu, and under this brand effect, the number of counties and cities that declare the hometown of Wushu has also increased. At present, there are 100 martial arts townships in China. The dynamic management and elimination system is implemented for the "national martial arts townships", and the title of martial arts townships is no longer once and for all. This is a process of scientific evaluation and dynamic management. Every year, we have to review and select, and we have to suspend the qualifications of martial arts townships that fail to meet the standards, and we will add outstanding counties and cities. (CCTV reporter Zheng Yidan)

　　CCTV News:Pretending to be an acquaintance to borrow money, pretending to be a public security bureau, a procuratorate or a court officer to investigate a case, and hiding a Trojan link &hellip in short messages and QR codes; … These tricks must have made everyone immune, but do you know? Some telecommunications services that you have never heard of have also begun to become new traps set by scammers!

The mobile phone was locked and more than 50,000 yuan was stolen.

　　When he woke up, Mr. He in Shenzhen found that his mobile phone was locked. At the same time, a shopping platform account was stolen by strangers. Criminals used white bars to spend and apply for loans, and robbed more than 50,000 yuan overnight.

　　Later, Mr. He discovered that his mobile phone had been taken over by a strange number. The short message from the operator shows that this is a business to add a secondary number, and Mr. He’s mobile phone number was added as a secondary number by criminals. When the secondary phone is turned off, all short messages will be received by the primary phone, and criminals will receive Mr. He’s short message verification code during this period, and then commit crimes.

"Subnumber" ≠ "kinship number"

　　Without an ID card, a bank card or even a real name, the money is gone. What the hell is a minor number?

　　Many people think of "family number" at first, but "deputy number" and "family number" are not the same thing.

　　Family number usually refers to the phone bill package opened by different owners and different numbers in order to make calls between them cheaper, and the secondary number is the "one card with many numbers" service provided by operators. On the basis of not changing mobile phones and SIM cards, users can add up to three real mobile phones as secondary numbers. The main and auxiliary numbers can stand by at the same time, and you can freely choose any number to dial, answer the phone and send and receive short messages as needed.

Don’t reply to text messages too casually.

　　Then, how did Mr. He’s mobile phone number become the "secondary number" of criminals?

　　Reduction of criminal modus operandi

　　Step 1: Buy materials.Criminals buy leaked names, bank card numbers, ID numbers and reserved mobile phone numbers online, commonly known as "four big pieces".

　　Step 2: Fishing.Criminals apply to the users who have mastered the bank card information, initiate the business application of binding the sub-number, and find the target of the crime by casting a net widely. Once you reply by mistake, you are hooked.

　　Step 3: Forced shutdown.Because the main number can only take over the SMS when the secondary number is turned off, criminals usually use two means at this time. One is to use SMS bombing to force the target to turn off the mobile phone, and the other is to use the mobile phone cloud service to remotely operate the mobile phone.

　　Step 4: White Wolf with Empty Gloves.Using the SMS verification code received by the main number, criminals ransacked the online shopping account bound to the mobile phone number.

　　Patterns are stacked, and it is impossible to prevent them! For this kind of fraud, after receiving all kinds of SMS notifications, you must read the content of the SMS clearly and do not reply at will.

"SMS custody" business is also not very secure.

　　After the SMS storage service is opened, you can save your mobile phone messages on the server of the operator. Now, many mobile phone manufacturers’ cloud services are doing the same thing. However, this is a hidden danger function.

　　Case review

　　One morning, Miss Ding saw two short messages from banks and mobile phone operators on her mobile phone, which were sent at 3:43 am and 4:12 am respectively. As soon as the account is checked, the balance of more than 100,000 yuan will be zero overnight! Not only that, Miss Ding also suffered a credit card theft and was "applied" for a bank universal loan of 70,000 yuan.

　　How on earth did all this happen?

　　Reduction of criminal modus operandi

　　Step 1: Hit the database to get all kinds of account information.The so-called "library collision" means using software to try a high probability digital sequence. Using this simple and rude method, the user’s network identity, online banking account number, mobile phone business hall and other accounts can be seen at a glance. Insiders said: "The speed of library collision is very fast, at least thousands per minute. If some good equipment is used, the efficiency is higher and the success rate is above 50%."

　　Step 2: Open SMS storage and SMS interception services to obtain verification code.This is the most critical step. After the opening of this service, the dynamic verification code to ensure the safety of landing has successfully become the bag of criminals.

　　Step 3: Open the physical SIM card.At this point, criminals can pretend to be victims and apply for 4G card replacement service in the online business hall. For the convenience of the people, some operators can express the card directly to the designated address.

　　By intercepting short messages and copying SIM cards, fraudsters can "do whatever they want".

　　As we all know, many important services rely on mobile phone authentication. If you back up the SMS to the server synchronously, it will increase the exposure opportunity. Once the service password of the online business hall is stolen, or the login permission of the cloud service is stolen, it is equivalent to "swimming naked".

The loopholes in the unpopular business are targeted by scammers.

　　The "Research Report on the Trend of Online Fraud in 2016" released by the anti-fraud reporting platform "Hunting Network Platform" proposes that since 2016, online fraud has mainly shown several obvious characteristics:

　　Mobile phone cards have become new theft targets;

　　Jump to the phishing website by using short URL and weiyun sharing link;

　　Well-known recruitment websites and voice platforms for open recruitment;

　　A phishing website that is difficult to distinguish between true and false;

　　The implementation of precision fraud;

　　Fraud professionalism is getting higher and higher;

　　Using loopholes in new business and unpopular business to commit fraud;

　　Use cloud disk and synchronization software to steal information.

　　Among them, the loopholes in mobile phone cards and unpopular business are mentioned.

　　Security experts suggest that we should develop good online habits, don’t click unfamiliar links, don’t fill in our personal information in the website interface with unknown security, and regularly modify the password of social accounts to avoid information such as mobile phone contact information being leaked; Improve safety awareness, develop good habits of using mobile phones, and avoid being infected by mobile phone viruses.

　　BEIJING, Beijing, September 27 (Ma Xueling, Lu Chunrong) On the 27th, there was strong wind and cool weather in Beijing. With the cold air heading south, the temperature in most parts of central and eastern China will generally drop in the next few days, which also makes the hot topic of "Crying in the Winter" once again appear on the Internet. So, will you really cry this winter?

　　Beijing gale cooling: it is estimated that the minimum temperature of level 7 gust is 12℃

　　This morning, there was a strong wind in Beijing, which made me feel cold.

　　China Weather Network reported that due to the influence of cold air, the northern wind began to take over the sky of Beijing at 4 or 5 o’clock this morning. According to meteorological monitoring, as of 5: 30 this morning, gusts of magnitude 6 or above have appeared in Haidian Station, Chedaogou, Xiangshan, Bei ‘an River, Fenghuangling, yongfeng middle school and Minzhuang.

　　The Beijing Meteorological Observatory issued a weather forecast at 6 o’clock today: it will be cloudy and sunny during the day, with a northerly wind of about five and a gust of about seven, with a maximum temperature of 23 C; It’s sunny at night, and the north wind turns from level 4 to level 23, with a minimum temperature of 12℃. In the gale blue warning, pay attention to wind protection and prevent falling objects.

　　At 17: 00 the day before, the Beijing Meteorological Observatory issued a blue warning signal for strong winds. It is estimated that there will be northerly winds of Grade 4 and 5 from north to south in Beijing from 4: 00 to 20: 00 on the 27th, and the gust can reach about Grade 7.

　　Cold air goes south in a big way, and autumn tigers turn into paper tigers in seconds.

　　In addition to Beijing, this morning, most parts of Inner Mongolia also experienced significant cooling, with the cooling rate in some areas exceeding 10℃ and the temperature falling below 5℃.

　　According to the news released by the Central Meteorological Observatory this morning, it is estimated that the temperature in most parts of central and eastern China will drop by 4 ~ 6℃ from north to south from September 27th to 29th due to the influence of cold air, with the temperature drop in the south-south area of eastern Inner Mongolia and the south-central part of northeast China reaching 8 ~ 10℃. There are 5 ~ 6 winds in parts of central and eastern Inner Mongolia, southern Northeast China, eastern North China and eastern Huanghuai.

　　Under the influence of cold air, the highest temperature in southeastern and northeastern Inner Mongolia generally dropped to around 15℃, and in some areas it was only around 10℃. On the 28th, the lowest temperature in eastern Inner Mongolia and Heilongjiang will drop to around 0℃. The highest temperature in North China has generally dropped by 20℃ in the early days, and autumn is getting stronger.

　　With cold air heading south and typhoon Miyu landing, the temperature in the south of the Yangtze River and South China will drop rapidly from 28th, and the highest temperature in most parts of the south of the Yangtze River and Guangdong will drop below 30℃. The hot weather will fade rapidly, and the autumn tiger will turn into a paper tiger.

　　Will you cry this winter?

　　For this windy and cool weather, some netizens said, "An autumn rain and a cold, in fact, it is nothing to cool down now. This winter, we may be frozen into dogs."

　　The reason why netizens have the above concerns is because of a word recently swiped — — La Nina.

　　The word "LaNina" comes from Spanish, originally meaning "little girl", which refers to the phenomenon that the sea surface temperature in the equatorial, Middle East and Pacific Ocean continues to be abnormally cold. If the 3-month moving average of SST anomaly is lower than -0.5℃ and lasts for at least 5 months, it is judged as a La Nina event.

　　Monitoring shows that in August 2016, the SST anomaly index in the equatorial Middle East Pacific was -0.53℃. According to the National Climate Center of China Meteorological Bureau, the equatorial Middle East Pacific entered La Nina state in August.

　　Li Xiaoquan, chief meteorologist of China Weather Network, said in an interview with Zhongxin. com (WeChat WeChat official account: cns2012) that it is still early in winter, and the authoritative meteorological department has not given the final forecast figures. It is still inconclusive whether La Nina will occur this winter.

　　"But now that we have entered the La Ni? a state, La Ni? a events may occur this winter. According to relevant analysis, in general, the probability of being cold this winter is greater." Li Xiaoquan said.

　　How powerful is La Nina?

　　According to China Weather Network, one of the impacts of La Nina event on China’s climate is that the temperature may be low in winter, which is prone to cold winter. Statistics show that since 1954, in the years affected by La Ni? a event, the proportion of cold winter in China has exceeded 80%.

　　For example, in the years affected by La Nina, the winter of 1954 was the coldest one, and the temperature was 2.95℃ lower than normal.

　　For another example, in early 2008, the La Nina incident was one of the important behind-the-scenes "pushers" of the once-in-50-year freezing rain and snow disaster in southern China.

　　According to regional statistics, in La Nina, the proportion of cold in winter in Tibet was the lowest, at 50%. In the northwest, southwest, south China and south China, it is as high as 80% or more.

　　Will La Nina definitely lead to a cold winter?

　　Will La Nina definitely lead to a cold winter? Li Xiaoquan said that normally, when La Nina happens, China will be colder in winter, but it doesn’t mean that it will enter the cold winter, but the probability of entering the cold winter is higher, especially in the southern region.

　　"La Nina came last year, which will make winter cold, but it doesn’t mean it will be particularly cold. It can be seen that some years have entered the cold winter, which is mostly related to the La Nina phenomenon, but it is not La Nina that will definitely enter the cold winter. "

　　As it said, it was also the winter of 1998/99 when the super El Ni? o turned to La Ni? a, but China experienced a warm winter.

　　China Weather Network reported on September 22nd that the equatorial Middle East and Pacific Ocean has entered La Nina state, but it has not reached the standard of La Nina event. China Meteorological Bureau will continuously monitor the development of La Nina.