On May 30th, the "Global Chinese Music List" pressed the "Restart button" to start the all-media live broadcast mode through live TV broadcast, new media cloud release, cloud audience, cloud connection and cloud interaction. "Global Chinese Music List" is an original music list-playing live program created by CCTV Music Channel of the Central Radio and Television General Station. Since its launch in 2014, thousands of new works by newcomers have been released, which is very popular among fans.

　　The "Global Chinese Music List" is based on all-media thinking, insisting on live singing and pursuing higher audio-visual quality. Every Saturday night, a beautiful music feast is presented to the broad audience.

　　On May 30th, the launch of "The List of Global Chinese Music" will be conducted through the interactive live broadcast mode of large and small screens. At 14 o’clock, the new media live broadcast will be started at the CCTV client, the CCTV multi-terminal, the cloud listening client and the CCTV music client, and the mental journey in the past six years will be comprehensively reviewed.

　　At 19:30, CCTV Variety Channel CCTV-3 and CCTV Music Channel CCTV-15 broadcast live simultaneously. Ren Luyu, john young, Lei Zhang, Zhang Yu, Wang Cong and Long Yang formed a super host lineup, and Jam Hsiao, JJ Lin, Laure Shang and Li Yugang were honored.

　　Excellent singers and groups such as Dong Baoshi, Lu Hu, Jason, Fiction, and those who fought in the south and fought in the north sang with their hearts. Jam Hsiao and JJ Lin exclusively launched Hello》MV on the stage of the list through the "cloud release" mode.

　　Live broadcast time and platform

　　May 30th, 14:00-21:00

　　"Global Chinese Music List" was launched in glory.

　　7 hours live broadcast of new media

　　Live broadcast platform:

　　May 30th at 19:20.

　　"Global Chinese Music List"

　　The second live mobile broadcast

　　Live broadcast platform:

　　May 30th at 19:30.

　　Live TV broadcast of "Global Chinese Music List"

　　Live broadcast platform:

Aluminum alloy assembled maintenance base station is an aluminum-based material, customized and assembled tent product developed by the company. The product is made of aluminum-based components with light weight, convenient transportation, rapid deployment, rain and wind resistance, beautiful and practical, and can meet the needs of rapid response, high maneuverability, high concealment and different scenes in other fields. The aluminum alloy lifting gate fills the gap in the corresponding field in China. The product scale can be customized for different customers and different equipment. At present, the company has successfully implemented several cases.

　　When you mention the name "",you may first think of a music platform with the same name, but now, the cool music car Haval Cool Dog, which also has an indissoluble bond with music, is born. Haval Cool Dog from Lemon Platform, as the second car of dog category, carries the strategic mission of brand layout to enter the compact urban off-road market. The biggest highlight of positioning the Haval cool dog house with cool music car can be summarized by a multiplication: 4×18. So what exactly do the two mysterious numbers in this multiplication represent? Let’s talk about it first.

　　Analysis of 4×18 Highlights of Haval Cool Dog

　　The only self-owned brand selling 1.5T four-wheel drive models:

　　What does Haval Cool Dog’s 4×18 multiplication represent? First of all, 4 refers to four-wheel drive. This time, Haval Cool Dog brought us not only the golden power combination of its 1.5T high-power engine and the third-generation 7-speed wet powershift, but also the intelligent and timely four-wheel drive system.

　　Specifically, the Haval Cool Dog inherits the urban off-road gene of the Haval dog category. The intelligent timely four-wheel drive system carried by Cool Dog does not require any operator intervention, and the system monitors the driving state of the wheels in real time and intelligently and dynamically distributes the front and rear axle torques. When a wheel loses its adhesion caused by road icing or sand pit in winter in the city, the four-wheel drive system can still provide stable power output, so as to satisfy the owner’s small willfulness of going out to the wild occasionally.

　　In addition, with the five driving modes of standard, economy, sports, snow and grass gravel, drivers and passengers are given rich options to effectively deal with various road conditions, further improving driving experience and safety guarantee.

　　Relying on the Great Wall Lemon Platform, the chassis performance of Haval Cool Dog has been upgraded in an all-round way. Its approach angle is 24, the departure angle is 26, and the minimum ground clearance is 196mm, which is very close to the approach angle of 24, the departure angle of 30 and the minimum ground clearance of 200mm for big dogs. Such as potholes in Lu Yu, joints between new and old pavements, or the need to get up and down the shoulder when stopping, can effectively avoid the risk of bumping and bottoming.

　　Join hands with JVC to build a luxury car-class music cockpit;

　　In order to create a luxury car-class audio experience, Great Wall Motor and century-old audio and video equipment manufacturer JVC jointly created a unique 4D burning cockpit music experience for Haval Cool Dog.

　　And 18 in 4×18 represents the 18-speaker intelligent sound system carried by the cool dog "4D burning cockpit". Haval Cool Dog has created an omni-directional stereo surround sound field with 18 speakers through 4 treble +2 midrange +1 center +4 bass +1 subwoofer +2 ceiling +2 rear surround +2 headrest speakers. Combined with the rhythm function of the seat, the 64-color atmosphere lamp and the car fragrance system that can rhythm with the music, it brings a four-dimensional immersive experience of hearing, touch, vision and smell.

　　Specifically, Haval Cool Dog is equipped with a 920W 16-channel independent power amplifier, a powerful SOC processing unit and four all-digital amplification chips, which has the characteristics of high efficiency, small distortion and strong anti-interference, ensuring the perfect restoration of high-fidelity sound quality, and supporting the later OTA to create an "evolvable" digital sound system; In terms of speaker design, the high-frequency and intermediate-frequency speakers are designed with strong magnetic NdFeB, which has ultra-high sound pressure, making the sound details richer and the human voice clearer. This laid the "material foundation" for Haval Cool Dog to rival the high-end stereo surround sound of 400,000 luxury cars.

　　It is said that tuning technology is the core to endow the whole sound system with soul. Based on this, after three months of domestic tuning, Haval Cool Dog was airlifted to Europe for testing and more refined debugging and polishing, and finally it was finally completed by an international tuning team composed of dozens of people across China, Japan and Europe and an international R&D team of over 200 people for 12 months.

　　With an excellent sound system, you also need a supporting high-quality experience environment. In fact, in the early stage of product development, Haval Cool Dog took NVH performance as a key topic to study, not just relying on sound insulation cotton to improve NVH performance in the late stage of research and development. It aims at internal damping resonance and external noise, and achieves excellent vehicle-level NVH guarantee on the basis of maintaining its own rigid modeling through front windshield and front double-layer sound insulation glass, powertrain control technology, acoustic package matching technology, air intake system control technology, chassis system control technology and transmission system control technology (four-wheel drive).

　　More than 4X18—-Comfort/Technology/Safety Aspects

　　Comfortable cockpit:

　　With a wheelbase of 2710mm, Haval Cool Dog creates a wider riding space by adopting ultra-short front and rear suspension design, further improving the "car ownership rate" of drivers and passengers.

　　In terms of practical space, there are 29 storage spaces in the car, and a cup holder with different sizes, a double-layer armrest box and a super-large storage space under the shift lever are planned, which fully considers the daily use needs of users.

　　The trunk volume reached 493L, and the space can be expanded to 1298L after the rear row was laid down. It is worth mentioning that, based on the demand consideration of facilitating the daily handling of large items and camping scenes, Haval Cool Dog has created a flat luggage compartment space after being laid down, which, together with the intelligent panoramic skylight of 1.1 square meters in the car, has the taste of "home" for mobile travel.

　　In addition, Haval Cool Dog also intimately planned and standard the cockpit cleaning system and CN95 air conditioning filter. Before the driver and passenger enter the vehicle, they can turn on the corresponding functions in advance through the mobile APP to control the vehicle to automatically turn on the external circulation, which helps to reduce the temperature inside the vehicle in hot summer, and also improves the air quality inside the vehicle.

　　Intelligent technology:

　　As a new car specially built for young people, intelligent technology should naturally not be absent. Whether it is L2 intelligent driving assistance, 12.3-inch multimedia large screen/LCD combination instrument, or 50W super wireless flash charging, intelligent inductive electric tailgate, 360-degree panoramic image and other configurations, Haval cool dog should also be equipped.

　　Specifically, Haval Cool Dog is equipped with L2-level driver assistance system, which can realize ACC, AEB, traffic sign recognition, speeding alarm and other functions through 19 detection units including 12 ultrasonic radars, 4 high-definition 360 cameras, 2 millimeter-wave radars and 1 intelligent forward-looking camera.

　　Haval Cool Dog also comes standard with a 12.3-inch LCD combination instrument with a resolution of 1920*720 and a 12.3-inch multimedia large screen, which can realize dual-screen linkage. In addition, Haval Cool Dog comes standard with a super wireless flash charging of up to 50W, which can save more than 60% time from 0 to full state compared with the mainstream wireless charging of 15W on the market, and the efficiency is obviously improved.

　　The appearance of intelligent inductive electric tailgate, Bluetooth key of smart phone, 360-degree panoramic image and even transparent chassis has improved the comfort and convenience of car use.

　　Security guard:

　　In terms of safety, the cool dog comes standard with 6 airbags including main and auxiliary airbags, side airbags and front and rear integrated side air curtains; The proportion of high-strength steel in the cool dog body is over 75%, among which the proportion of ultra-high-strength steel and thermoformed steel with greater strength is 41%. In case of danger, passengers can be effectively protected through high-strength body and reasonable force transmission channel.

　　Summary:Courage is nature. The appearance of Haval Cool Dog, which is born of music and speaks for young people, will surely bring a brand-new choice to Z generation consumers who dare to enjoy themselves and innovate.

Cctv newsAt 8 o’clock every day, CCTV will sort out the big and small things that happened around us within 24 hours.

:: Ministry of Natural Resources: research on cross-strait integration and development of major transportation facilities into national planning.

Ministry of Education: Require the prevention of sexual assault into primary and secondary school textbooks.

General Administration of Market Supervision: 93,185 vehicles were recalled, involving six brands including Mercedes-Benz and Volvo.

North Exchange: Pre-school education and discipline training enterprises are not allowed to go public.

Many colleges and universities will advance their winter holidays, and some schools will open holidays in late December.

Autumn grain is expected to increase production! The total national grain output is expected to reach more than 1.3 trillion Jin.

Gan Lin became the director of the State Anti-Monopoly Bureau, in charge of the Law Enforcement Inspection Bureau, the Competition Policy Coordination Department, the Anti-monopoly Law Enforcement Division I, the Anti-monopoly Law Enforcement Division II, and the Price Supervision and Inspection and Anti-Unfair Competition Bureau (Office for Regulating Direct Selling and Combating MLM). Preside over the work of the State Anti-Monopoly Bureau.

British police declared the Liverpool bombing a terrorist attack and arrested four suspects.

A Japanese land self-defense team member was arrested on suspicion of secretly photographing female high school students.

The International Space Station was threatened by space junk, and Russian astronauts took refuge in the Soyuz spacecraft.

Italian white truffles weighing 850 grams were auctioned for 103,000 euros (about 750,000 yuan).

A kitten in Turkey is born with four ears, and its image is cute and popular on the Internet.

A minibus collided with a heavy dump truck in Maanshan, Anhui Province, killing 8 people and injuring 8 others.

A school in Qidong, Jiangsu Province fell from a building. At present, the vital signs of three students are basically stable. The relevant local authorities said that the cause of the fall will be announced to the public in time.

Tourism bloggers desecrated the tomb of the martyrs: sentenced to seven months in prison and publicly apologized.

A man in Wuqing, Tianjin, claimed 3000 yuan for bringing his own flies to drink porridge and touch porcelain. After investigation by surveillance video in the store, he was criminally detained by the police according to law.

In advance, he broke his partner’s finger with a hammer. A self-mutilation "touching porcelain" gang in Guangxi was arrested and six suspects were criminally detained according to law.

An aunt in Liaoning tied a rope with a sheet and fell from the 4th floor of the closed building and was injured. At present, the situation is stable and there is no serious problem.

The man was arrested by Linzhou police in Xuzhou, Jiangsu Province, after being suspected of robbing 11 babies and reselling them.

A boy in Lianyungang, Jiangsu Province holds a flower to express his confession to a girl. It was only at the moment of kneeling on one knee that he found the wrong person. Netizen: How nervous.

I haven’t finished my hybrid rice either. I’m retiring.

— — Yuan Longping’s wife, Deng, tearfully recalled what Yuan Longping said before she died.

This is the Yellow River photographed by Jilin-1 satellite. From the aerial perspective, overlooking our mother river, every frame is a splendid mountain and river.

The People’s Bank of China is scheduled to issue a set of gold and silver commemorative coins for the year of Renyin (Tiger) in China in 2022 on November 18th, 2021.

"What shihou are you free to come back zou me? I xiang you. " Gong Huiying, a traffic policeman in Changzhou, Jiangsu Province, who fought against the epidemic, had not returned home for a week when he received a letter from his 7-year-old son some time ago. Recently, Gong Hui won a vacation and went home to reunite with his son. At the moment when the father and son embraced each other tightly, their happiness overflowed the screen.

See you at 8 o’clock tomorrow!

Editor in Charge: Sun Jie

Editor: Luo Meng Chen Shiwen　　

Yam Tat-wah; Simon Yam

　　In the face of a "gangster" who has acted in more than 160 movies and more than 2,000 TV series, and can still eat with charm and eyes at the age of 52, you can’t help but feel awe. In the early morning of the 6th, Yam Tat-wah, who just got off the plane, accepted an exclusive interview with this newspaper in a suite of 8,000 yuan a night. During the nearly two-hour chat, except for a "violent" lock breaking incident because she forgot the suitcase password, Yam Tat-wah was so gentle. Just like when he spoke for Zhonglong International Royal Seal Real Estate at the press conference the next day, the host mistook him for Andy Lau (listening to music), and he didn’t take out a gun from the inside pocket of his suit. And when you see him take out a schedule filled out by himself, accurate to the hour, you may even think that he is so old-fashioned in life, but this is Yam Tat-wah’s real off-stage life.

　　Become famous and never forget your roots. Never eat abalone or bird’s nest.

　　Yam Tat-wah told reporters openly that his family was poor in childhood and adolescence. He lost his father when he was 11 years old. His mother took three children to live in a crowded corridor, and 30 families shared five bathrooms. In addition to studying, Yam Tat-wah also helps her mother string beads and make plastic flowers to subsidize her family. "The only entertainment is to watch a black-and-white TV at home. At that time, I really want to become a TV person." But the opportunity came at once. In the first year of middle school, Yam Tat-wah saw an advertisement for a model in the newspaper. He usually loves sports and has a strong figure. He signed up and was lucky to be selected. "I remember it was an advertisement for soda. I drank three bottles and passed, and the reward was only 200 yuan. Although it is a supporting role, so many models are popular with me, so happy. " Since then, more and more businesses have started to find Yam Tat-wah, and he can afford his own tuition. Yam Tat-wah’s life today has always been influenced by his childhood. For example, he never eats abalone and bird’s nest. "I tell people around me that it’s useless to eat those every day. I am a person with rice feelings. I must eat a dish every day-tofu, which is nutritious and cheap. I like vegetables and eggs, which is cheap and beautiful." The "boss" who is very affectionate has not been alienated from the friends who lived in the corridor in the past. "We have to get together several times a year."

　　When you are popular, you still insist on sacrificing yourself to achieve various roles.

　　Yam Tat-wah said several times in the interview that he was very lucky. In 1979, he got a leading role to play the police. "I have always respected the police in my life, and as long as I put on my uniform, the feeling of the police will come out, and I don’t have to play. You can never play like Stephen Chow, even if you play a funny policeman. " Asked repeatedly why there was such a strong police complex, Yam Tat-wah revealed that his father and brother were both policemen, and that "the death of my father was also an accident on business". And his brother Ren Darong is now a senior official of the Hong Kong Police Force. However, Yam Tat-wah said that his brother never commented on his gangster films. Yam Tat-wah also said that in fact, he is more looking forward to playing the police than the murderous gangster boss. "There is no way, I am like a fruit in a fruit bowl, and I will sacrifice myself to achieve various roles." Some people say that Hong Kong’s entertainment industry is now in an era of neglect, and the new generation of Nicholas Tse (listening to music) and Daniel Wu always give people the feeling that they can’t take over. Yam Tat-wah said that this will happen everywhere. "It’s not that they are not good, but that they don’t stick to it well. For example, some of my friends who were very popular more than 20 years ago don’t know where they are now, but look, Du Qifeng and Chow Yun Fat (listening to music) are all insisting, and there are young actors who want to make good movies, so don’t overdo it. Some things come too fast, so we should know how to cherish and enjoy them. "

　　Happy family will send her daughter to Beijing to study in the future.

　　Yam Tat-wah and his wife, Sophia Kao, one is an actor and the other is a supermodel, who are playing the romantic myth like a fairy couple in the entertainment circle. Yam Tat-wah said with a smile that he had been unrequited for two years before pursuing Sophia Kao. "Love at first sight, hard to chase. I saw Sophia Kao’s photo in a magazine, and I had the idea of making her my wife. But asking questions, no one knows where she is. I looked at the photos for two years, but I finally met her in an Austrian hotel. At that time, I invited her to have dinner with her parents. How do you make it clear about fate? " Now they have a lovely three-year-old daughter, Ren Qingjia. "Being a father is different. I am tired every day, and I smile at my daughter when I get home." He likes buying houses all over the country, and even bought a suite in her name when her daughter was one year old, and planned to use it as her residence when she was studying in Beijing in the future. Yam Tat-wah said that he would never send his daughter abroad to study: "The capital has a cultural atmosphere and historical sites, so why should it be sent out? My Mandarin is still not standard, please ask the teacher to teach, but my daughter’s first language is Mandarin and she speaks Mandarin. " Yam Tat-wah, who is eager to love her daughter, also said that children should not go their own way. "It is too hard to be an actor, and the EQ is very high to perform the trick well. Of course, if she likes it when she grows up, there is no way. I can only teach it by myself."

　　Link will personally decorate his home in Changsha.

　　This time, Yam Tat-wah made a special trip to Changsha, mainly to speak for Zhonglong International Royal Seal in the real estate project. Yam Tat-wah said that he has invested in properties all over the world, such as Manhattan 58th Street in new york, the second district in Paris, Central in Hong Kong and New World Business District in Beijing, totaling more than 20 places. Yam Tat-wah, who has become a real estate expert, said that he pays great attention to the grade and taste of real estate, and will never speak casually. "This endorsement of Zhonglong International Royal Seal, in addition to my satisfaction with the remuneration, I also bought a house myself. I have learned in detail that the central lake is 6000 square meters, and specially designed elevator buttons, smart cards for the elderly and children, spacious apartment space of 180 square meters to more than 500 square meters and perfect educational configuration. No matter the structure, texture, taste or humanistic environment of the house, it is very humanized. To be honest, this kind of property may not be possible even in Hong Kong. " Yam Tat-wah also said that this is also his first house in Changsha, and he likes to design and decorate his own mansion himself. In addition, Yam Tat-wah, who has been fascinated by photography for many years, said that he will come to Changsha again in a few months, and hold an exhibition of his own photography works in the newly-built clubhouse of Zhonglong International Royal Seal to communicate with fans in Changsha.

Our reporter Wang Lu Changsha reports.

　

Editor: Liu Liyan

Leicester city VS Leeds United

Leicester City defeated the Rangers away from home, and the league won 9 consecutive victories. The team’s recent performance is still hot, and it currently ranks first in the league with 39 points. Leicester city’s offensive end is active, and the stability of defense line is extremely strong. Leeds United beat Hadders at home in the last league. Although the team has experienced some ups and downs recently, it still wins more and loses less overall. At present, it ranks third in the league with 25 points. Leeds United’s offensive output is equally strong, but the defense strength is really insufficient in the near future.

Leicester city’s recent performance is still strong, and the team is currently at the top of the league. At the same time, the team’s home performance is also very strong. Leeds United is still winning more and losing less in the near future, but its overall stability is still insufficient compared with its opponents, especially the team’s recent defensive line is unstable. This time, leicester city is sitting at a strong home, and I believe there is still a chance to win the opponent’s winning streak.

Las palmas VS Atletico Madrid

Las palmas defeated Alme, the underdog in the last league, and the team has won many victories in the underdog recently. At present, it is chasing the 10th place in the league with 14 points. Las palmas’s offensive output has been strengthened, but the stability of the defense line is still insufficient. Atletico Madrid defeated Alaves at home in the last league, and the league won six consecutive victories. The overall state and stability continued to rise, and it is currently ranked third in the league with 25 points. Atletico Madrid’s offensive output has been continuously improved, and its defensive performance is acceptable, but the situation of zero sealing has been reduced.

Las palmas’s recent achievements have indeed warmed up, but the opponents are mostly weak teams in the league, and the gold content is really not high. The team’s performance at both ends of attack and defense is still obviously insufficient in the face of strong teams. Atletico Madrid’s recent performance is still strong, and the front line output is still very stable, but the defensive strength needs to be improved. This time, Atletico Madrid is a guest to challenge the opponent. I believe it is still a cinch to take away three points.

Paris saint-germain VS Montpellier

Paris Saint-Germain beat brest away from home in the last league, and the league won three consecutive victories and five unbeaten rounds. The team’s recent performance has been getting stronger and stronger, and the difference between the team and Nice at the top has narrowed to one point. The offensive output of Paris Saint-Germain has been strengthened again, but the defensive strength needs to be strengthened. Montpellier beat Toulouse at home in the last league. Although the team lost away from home before, its overall performance is still strong in the near future. At present, the team ranks sixth in the league with 15 points. Montpellier’s offensive output is still significantly strengthened, but the defensive end is also not stable enough.

The overall strength of Paris Saint-Germain is very secure, and the team’s recent achievements and performance are also worthy of recognition. In addition, the team has also found the home court advantage. The overall performance of Montpellier has also improved recently, winning several victories, but it is still difficult to compete with Paris in terms of strength. Montpellier’s visit to challenge Paris this time, I believe it is still a situation of losing less and winning.

Porto VS Lille, esto

Porto defeated Visala away from home in the last league, and won two consecutive victories in the league. Although the team suffered defeat in the face of traditional powerful teams, it still had no pressure in the face of other opponents. At present, the team ranks third in the league with 22 points. Porto’s offensive output is very secure, and the stability of the defense line has also improved. Lille, esto, lost to Polti in the last league, and the league suffered another three-game losing streak and seven rounds. At present, it only ranks at the bottom with four points. Esto Lille’s offensive performance is also relatively active, but the defense loopholes are also huge.

Porto’s overall strength is very secure, and the team is still able to face other opponents in the league, and the performance at home is also very safe. Rival esto Lille’s recent performance is still sluggish, although the offensive output is still guaranteed, but the defense loopholes are too large. This time, Porto sat at home to meet the challenge of the vice squad leader. I believe the team still has the ability to beat the opponent and win three points.

Bologna VS lazio

Bologna drew with Sassuolo in the last league. Although the team’s winning ability is not strong, it can still guarantee the unbeaten game in nine rounds, and the overall stability is acceptable. At present, the team ranks eighth in the league with 15 points. Bologna’s offensive output has strengthened, but the stability of the defense line has declined. Lazio beat Florence at home in the last league, and the league won three consecutive victories. The team has been in a strong state in the near future, and it can also win battles in a row. At present, it ranks seventh in the league with 16 points. Lazio’s offensive efficiency has improved, and the stability of the defense line has improved.

Bologna’s overall performance is quite stable. It has previously drawn against strong teams such as Juventus, Inter Milan and Naples, and it has a strong ability to score points in the main battle. Lazio, the opponent, has been strengthening in recent days, and it is also in a winning streak. Although the team’s performance in the away game is not good, most of its opponents are league teams, and they also have the ability to score points away from home. This time, the two teams collided, and Bologna, who performed very steadily, still had a chance to defend the unbeaten home, and the possibility of a draw between the two sides was not small.

　　Wu Guanghui, chief designer of Comac C919 and ARJ21, has won the national special prize for scientific and technological progress and the first prize for national defense scientific and technological achievements. A key model won the first prize of China Aviation Industry Corporation I and the first prize of the National Defense Science, Technology and Industry Committee.

　　"Many aircraft parts are made in China and fly in the sky every day. C919 has gone through nearly seven years, and has done a lot of design, calculation and experiments. I am definitely willing to take this plane first. "

　　— — Wu Guanghui

　　These days, in the commercial aircraft test center of China Commercial Aircraft Corporation, the newly-built Zhuqiao test hangar in Pudong is spacious and bright. In the hangar, the landing gear that originally supported the domestic large passenger plane C919 was all put into the landing gear cabin, and three air springs like "jacks" lifted the plane into mid-air. What is going on here is the ground resonance test and modal coupling test of the whole aircraft that must be completed before the first flight, which means that the C919 has officially entered the final sprint stage before the first flight.

　　C919 is a domestic large passenger plane independently designed and developed by China. It is a short-haul single-aisle narrow-body passenger plane with more than 150 seats. In the future, it will compete with internationally renowned commercial aircraft such as Airbus 320 series and Boeing 737 series for orders. The manufacturer China Commercial Aircraft Co., Ltd. recently announced that the C919 plans to make its first flight in the first half of 2017 and will fully launch the wide-body passenger aircraft project. It can be said that after nearly 10 years of hard work, China people’s dream of "big plane" will soon become a reality.

　　① Rigorous test to ensure safety.

　　To fly into the blue sky, a plane must first practice a pair of steel bars and iron bones. For the C919, which carries the dream of a big plane for Chinese people, the significance of the test is even more significant. This is the first large passenger plane made by China people, and its safety cannot be lost.

　　For this reason, C919 has undergone a series of tests like "torture". Among them, the 2.5g static test of the whole aircraft started in early November last year is the most severe and significant one since the birth of the C919.

　　This test mainly tests the strain and deformation of the "skeleton" of the body under constant external loading. In layman’s terms, this kind of test is to let the aircraft simulate the stress situation when challenging air flight on the ground, and go beyond the natural limit to verify how much force the aircraft can bear.

　　Before the start of the experiment, the researchers covered the whole body with white adhesive tape, which is a resistance strain gauge that can sensitively measure stress and strain close to the surface of the body, just like doing electrocardiogram for the plane. During the test, the load starts to rise at the level of 5%, and the load must be kept for 3 seconds every time. "The structure must be able to withstand the ultimate load for 3 seconds without damage." Zhou Liang Dao, deputy chief designer of the C919 passenger plane, said that the preparation behind the team took more than 300 days for this short three seconds.

　　With the continuous loading, the aircraft began to show obvious external reflection, and the wing began to tilt up a little. Finally, when the load reaches 100% of the test outline, the wing tip tilts up to nearly 2 meters, which is highly consistent with the strength analysis before the test, which shows that the test is successful and its strong "bones" and body are enough to support flying into the blue sky.

　　This is just a small step in the long March before the first flight of the plane. A passenger plane has to complete 13 static tests in 48 working conditions, including pressurization in the booster cabin, front lifting connection, main lifting connection, whole aircraft condition, vertical tail and rudder, as well as "three-bird test" such as iron bird, copper bird and electric bird and joint test of the whole aircraft system. Therefore, researchers have made independent innovations in system integration experiments.

　　In the comprehensive test hall of Shanghai Aircraft Design and Research Institute, the iron bird test-bed with little difference from the C919 real machine looks like an eagle with wings spread and its tail stuck high. Don’t underestimate this test-bed. Its full name is "Integrated Test-bed for Flight Control Hydraulic System", which mainly tests the landing gear, wings and other mechanical systems of aircraft. In order to ensure the authenticity of the system test, the iron bird test-bed is designed according to the 1:1 ratio of the real aircraft, so that the mechanical installation interfaces of the flight control, hydraulic and landing gear systems are the same as those of the aircraft.

　　Next to the Iron Bird Test Bench, there is also a "Copper Bird" that tests power supply systems such as power generation and distribution, and also restores the real state of the machine to 1:1 for equipment installation. "Iron Bird", "Copper Bird" and the avionics system test called "Electric Bird" will eventually be all connected, thus forming a "three-bird joint test" to simulate the state of the aircraft.

　　In the experiment, researchers conducted a comprehensive test on the aircraft system. Take the avionics system as an example. At most, there are more than 100,000 parameters in a test. These parameters should be tested one by one to find out the possible omissions in the design. "Our goal is not to take the fault to the sky." Yu Shenghui, senior engineer of the General Aerodynamics Department of Shanghai Aircraft Design and Research Institute, said.

　　According to the plan, six testing machines are carrying out joint testing of the whole machine system, and customer service engineering and airworthiness work are also being carried out simultaneously.

　　②C919 is genuine China goods.

　　As the first large passenger plane with completely independent intellectual property rights in China, C919 has been frequently questioned since it was established in 2006: an aircraft whose engine, avionics core processing system and some materials all depend on foreign products or technologies, why should it be said to be "made in China"?

　　In fact, to evaluate the innovation of C919, we may need to draw lessons from a fairy tale named Pony Crossing the River. This story is about a pony crossing a river. A cow next to it said, "The water is very shallow, just without a calf, so you can cross it." But the squirrel in the tree said, "The water is deep and will drown." So, is the river deep or shallow? Finally, the pony got off the river by himself and carefully waded to the other side. It found that the river was neither as shallow as the cow said, nor as deep as the squirrel said. The same is true for the development and innovation of C919. Everyone should not only see the major innovations achieved in the process of aircraft development, but also objectively admit the existing shortcomings.

　　According to international standards, judging whether an airplane is made in China or assembled depends on whether it meets three conditions. 1. Who owns the property right of the whole machine? Second, who is the core team to develop the whole machine? Third, who holds the key link in the development of the whole machine? For C919, the answer to these three questions is China.

　　The person in charge of Comac in China said that the property right of the C919 is owned by Comac in China. The team of Comac in China is the core of the development, and the key links such as aircraft design, final assembly, test flight and sales are in the hands of Comac in China.

　　As for foreign companies providing parts or technology, this is a common thing in the global aviation manufacturing industry. Aviation manufacturing giants such as Boeing and Airbus also use foreign products on many key components when developing aircraft.

　　However, for equipment like engines, the C919 chose the LEAP-X1C engine jointly developed by the United States and France, which is the only foreign starting power device selected by the C919. It should be said that the engine is indeed a major constraint in the development of China’s large aircraft, and it can only be sought from people at present. However, I believe that in 10 to 15 years, China will be able to develop its own advanced aero-engine for large aircraft.

　　③ Have a number of scientific and technological innovations.

　　Experts said that the C919 was completely designed and integrated independently, with outstanding technical indicators. It is the persistent innovation of researchers who have sharpened their swords for ten years that has led to the high-tech C919, which integrates many key technologies.

　　However, what did C919 look like when it was approved as one of the 16 major projects in the national medium-and long-term science and technology planning in January 2006? What difficulties may be encountered in the development? Due to the limitation of western aviation powers in technology introduction, China researchers have no idea and can only cross the river by feeling the stones.

　　In November 2008, the C919 project was launched. A large passenger aircraft joint engineering team composed of 468 experts from 47 domestic and foreign units, plus a large passenger aircraft expert consulting group composed of 20 academicians and experts, started from sketches and gradually sorted out the first batch of 14 special technical research projects that need to be started.

　　Among these key technologies, there are several that must be mentioned. For example, the "supercritical airfoil" that makes airplanes more fuel efficient. A large passenger airliner is an out-and-out "oil tiger". In order to reduce fuel consumption, the wing design of C919 uses a supercritical airfoil, which improves the cruise aerodynamic efficiency by more than 20% and reduces drag by about 8%.

　　Another unique innovation is the adoption of the third generation Al-Li alloy materials. It is the first time in China that the world’s advanced third-generation Al-Li alloy materials are widely used in the main structure of C919. Compared with ordinary aluminum alloy, this lightweight metal material with high damage resistance has greater strength and lighter weight under the same strength, which is very important to realize the weight reduction of aircraft structure and greatly improve the service life of aircraft.

　　In addition, as the "brain" of the C919, the avionics system of the aircraft has realized "giving all the work to the network". Compared with the old version of the network, which was widely used before but had limited bandwidth, the new aviation bus communication protocol adopted by C919 not only has high bandwidth but also shares resources, which means that the signals that originally needed to be transmitted through several cables can now be transmitted by one cable. Experts said that this is like we need to run 10 trains from A to B, but we don’t need to build 10 railways. We only need a set of double-track railways and a reliable signal system.

　　According to Wu Guanghui, the chief designer of C919, the developers have planned 102 key technical problems, and many advanced materials have been applied on a large scale in domestic civil aircraft for the first time. The development process of millions of parts and airborne systems is highly parallel. In order to overcome these technical difficulties, 22 provinces and cities, more than 200 enterprises, 36 universities and hundreds of thousands of industrial personnel participated in the development of C919 large passenger aircraft, and 16 material manufacturers and 54 standard parts manufacturers including Baosteel became suppliers or potential suppliers of large passenger aircraft projects.

　　Our reporter Peng Xunwen