The Yellow River is the mother river of the Chinese nation, and its protection is a great plan for the great rejuvenation and sustainable development of the Chinese nation.

　　"jointly do a good job in great protection and jointly promote great governance" and "make the Yellow River a river of happiness for the benefit of the people". General Secretary of the Supreme Leader recently hosted a symposium on ecological protection and high-quality development of the Yellow River Basin in Zhengzhou, Henan Province, and delivered an important speech. Focusing on the overall situation of national development, he clearly pointed out that the Yellow River Basin has a very important position in China’s economic and social development and ecological security, profoundly expounded the great significance of ecological protection and high-quality development of the Yellow River Basin, and made major arrangements to strengthen the management and protection of the Yellow River Basin and promote its high-quality development, which provided an important follow-up for us to jointly do a good job in great protection and jointly promote great governance, and will certainly better manage and protect the Yellow River and make it benefit the people.

　　Those who are good at games seek the potential, while those who are good at governance seek the overall situation. After the 19th National Congress of the Communist Party of China, the CPC Central Committee with the Supreme Leader as the core further improved the strategic layout of national development and shaped a new pattern of regional coordinated development. The Yellow River Basin is an important ecological barrier and economic zone in China, and it is also an important area to win the battle against poverty. The ecological protection and high-quality development of the Yellow River Basin, like the coordinated development of Beijing-Tianjin-Hebei, the development of the Yangtze River Economic Belt, the construction of Guangdong-Hong Kong-Macao Greater Bay Area and the integrated development of the Yangtze River Delta, are major national strategies. Strengthening the management and protection of the Yellow River, promoting the high-quality development of the Yellow River basin, actively supporting the provinces and regions in the basin to win the battle against poverty, and solving the problems of flood control safety, drinking water safety and ecological safety that the people in the basin, especially the ethnic minorities, care about are of great significance to maintaining social stability and promoting national unity.

　　"The Yellow River is peaceful, and the world is peaceful". Since the founding of New China 70 years ago, the Party has led the people to open a new chapter in the cause of harnessing the Yellow River and created a historical miracle of the Yellow River in An Lan. Since the 18th National Congress of the Communist Party of China, the CPC Central Committee with the Supreme Leader as the core has focused on the overall situation of ecological civilization construction, and made clear the idea of "giving priority to water conservation, balancing space, systematically managing and exerting strength with both hands". Great changes have taken place in the economic and social development and people’s lives in the Yellow River Basin. Practice has proved that only under the leadership of the Communist Party of China, giving full play to the advantages of the socialist system, can we truly realize the historic transformation of the Yellow River management from passive to active. It is the common aspiration of hundreds of millions of people to forge ahead in a new era, build a new journey of dreams, strengthen the management and protection of the Yellow River and promote the high-quality development of the Yellow River Basin, which is an inevitable requirement for us to move towards high-quality development.

　　Harnessing the Yellow River should focus on protection and governance. To promote ecological protection and high-quality development in the Yellow River Basin, it is necessary to thoroughly study and understand the spirit of the important speech of the Supreme Leader General Secretary and implement the decision-making arrangements of the CPC Central Committee. We should adhere to the concept of Lucid waters and lush mountains are invaluable assets, adhere to ecological priority and green development, act according to the water, adjust measures to local conditions, make classified policies, and make overall plans for the upstream and downstream, main tributaries and left and right banks. It is necessary to adhere to the comprehensive management, systematic management and source management of landscapes, forests, fields, lakes and grasses, and focus on strengthening ecological protection and management, ensuring the long-term stability of the Yellow River, promoting the high-quality development of the whole basin, improving people’s lives, and protecting and inheriting the Yellow River culture. We should give full play to the superiority of China’s socialist system in concentrating on doing great things, firmly establish the idea of "playing a game of chess", respect the law, and pay more attention to the systematicness, integrity and synergy of protection and governance. Qi Xin will work together to create a new situation of ecological protection and high-quality development in the Yellow River Basin.

　　"The Yellow River falls to the East China Sea, and Wan Li writes in his mind". Promoting ecological protection and high-quality development in the Yellow River Basin is not a day’s work. As long as we maintain our historical patience and strategic determination, we must have my historical responsibility in order to succeed in my spiritual realm and success. We must plan the long-term and work in the present, draw a blueprint to the end, and work one after another, and we will certainly make the Yellow River a river of happiness for the benefit of the people.

　　People’s Daily (September 21, 2019, 02 edition)

　　CCTV News:Just three days ago, our reporter met Yang Liwei. After the mission in Shenzhou 5, he, like other astronauts, has to do physical training for three and a half days every week. The astronaut team is divided into the main echelon and the backup echelon. As a member of the backup echelon, Yang Liwei mainly conducts special training for the tasks of the future Shenzhou 15 spacecraft. Yang Liwei, who is now the deputy chief designer of China’s manned spaceflight project, often talks with the astronauts on the Shenzhou 12 spacecraft.

　　In a recent call, the astronaut of Shenzhou 12 told Yang Liwei that the work in space was not easy.

　　The space station consists of Tianhe core cabin, two test cabins, Tianzhou cargo ship and shenzhou spaceship. In order to create a comfortable environment for astronauts, in 2020, the Fifth Academy of Aerospace Science and Technology Group organized a five-cabin joint test in Tianjin Aerospace City.

　　Tianhe core module was launched by Long March 5B rocket on April 29th this year. In this hall, there are too many ups and downs of the Long March 5 team. On July 2, 2017, the "Changwu" team suffered an unforgettable failure. Without any warning, when the rocket flew to 346 seconds, the engine parameters suddenly dropped, and the launch of the second rocket failed. In order to find out the cause of the launch failure, it took nearly 100 days for the "Changwu" team to locate the fault alone.

　　There are Cosmos 5, Delta 4 in the United States, Ariane 5 in Europe and H2A in Japan in the world. The success rate of the first flight of these four rockets is only 50%. In order to grasp the development law of large-scale cryogenic rocket, in the process of solving the remote 2 fault, the "Changwu" team gradually refined more than 5,000 design characteristics that affected the success or failure, and strictly controlled them with data one by one, finally ensuring the consistency of products.

　　After the successful launch of Yaoer II, the Long March 5 will be followed by the mission of the third phase of lunar exploration and the space station. "Changwu" people are faced with two choices: redesign and optimization. Redesign is simple and safe, but it will take another two years for the engine alone, which has unimaginable impact on major national projects. In the end, the "Changwu" people resolutely chose the road of optimization and improvement, even if they only sleep for four or five hours a day, they should solve the problem.

　　China has been catching up, running and surpassing all the way with amazing speed since the manned spaceflight project was implemented for 29 years. From the unmanned spacecraft to the stable operation of the space station, China has crossed the development course of developed countries for half a century, and 12 astronauts have made 17 in-orbit flights. With hard work and responsibility, astronauts have created outstanding achievements in launching "0 mistakes" and recovering "10 rings for shooting", and also injected new era connotation into the manned space spirit of "being particularly able to endure hardships, fighting, tackling key problems and contributing".

“‘ Thanks to Cheetah ’ Let the foul have nowhere to escape. "

On the evening of the 7th, there were many collisions and accidents among the contestants in the men’s 1000m short track speed skating final of Beijing Winter Olympics. Finally, the referee looked back at the video system and decided that Ren Ziwei of China won the championship and Li Wenlong won the silver medal. After the game, many netizens shouted: "Thank you cheetah".

What exactly is a cheetah? Is it really it that decides the controversy in short track speed skating? The News Hyperlink program of China Voice of Central Radio and Television Station interviewed the head of the Cheetah R&D team — — Zhaowei, a senior engineer in the special equipment department of the Central Radio and Television General Station, came to see the secret ↓

Have the speed of "cheetah"

Special shooting equipment is 90 kilometers per hour.

Cheetah, whose full name is "Ultra-high-speed 4K track camera system", is a special camera equipment independently developed by the Central Radio and Television General Station for five years, which is specially used for the broadcast of speed skating events in the Winter Olympics. This Winter Olympics is its debut.

Zhaowei said that it is called "cheetah" because it is very agile. In the speed skating competition of the Winter Olympics, the speed of athletes can reach 15 to 18 meters per second, which is about 50 kilometers per hour, while the speed of top athletes can reach 70 kilometers per hour. The "Cheetah" design technical standard can reach 25 meters per second, which is about 90 kilometers per hour.

Not only that, "Cheetah" can also accelerate, decelerate and surpass according to the needs of live broadcast, so as to capture various scenes in speed skating competition more flexibly and casually.

△ "Cheetah" that runs faster than speed skaters

Why didn’t you use "cheetah" in the short track speed skating competition?

Zhaowei revealed that there is only one set of "Cheetah" system, which is installed in the "Ice Ribbon" venue. The short track speed skating competition that netizens paid attention to on the 7 th did not use the "cheetah". Why is this?　

△ "Cheetah" and its high-speed orbital companion

According to reports, the high-speed track system has certain requirements for the venue. It is necessary to install the track system behind the sponge cushion of the athletes outside the stadium, and also install isolation plates to ensure the safety of the surrounding people. However, this short track speed skating venue does not meet the deployment requirements of Cheetah. For the sake of adaptability and safety, Cheetah system was not installed in the short track speed skating competition.

△ zhaowei, head of the special equipment department of the reception desk

In addition, the referee system and the TV relay system are independent of each other. The referee system will arrange some cameras at the scene to shoot the key positions in the venue or the players’ foul actions. Referees will refer to the images of the referee system more than the live images we see on TV.

△ Cone barrel camera developed for speed skating live broadcast

What other "reporting artifacts" are there in this Winter Olympics?

·"Time Slice": It can dissect the instantaneous black technology

In addition to "Cheetah", the technical team of the main station also developed an AI image processing system for the 8K live broadcast system, so that the wonderful moments of athletes’ competitions can be presented in a "time slice" way.

On the morning of the 8th, in the broadcast of the women’s freestyle ski platform final in which Gu Ailing won the third gold medal for the China delegation, it was with the help of "time slicing" technology that the audience intuitively saw that Gu Ailing seemed to have "separation" through video playback, and from takeoff to landing, the flying trajectory composed of multiple postures was frozen in the same picture.

·The upgraded front desk "China Red" is coming.

As the international mainstream media and rights-holding broadcaster, CCTV is responsible for broadcasting the opening and closing ceremonies and producing public signals with the world-leading 8K technology.

At the same time, the main station also realized the 4K recording and broadcasting of the first event in the history of the Olympic Games, and produced public signals for freestyle skiing, speed skating and other projects with 8K technology. The continuous upgrading and innovation in technology is only to create the best audio-visual experience.

Augmented Reality (AR) Live Presentation System

The theme of the opening ceremony of the Winter Olympics is "Building a Snowflake". With the full support of technology, the broadcast control system team of the main station carefully constructed the augmented reality (AR) live presentation system for the opening ceremony. The virtual snowflakes are all made in real time by using AR technology, and the large-screen images are played at a playback rate of 50 frames, which makes us see the millisecond moment of "Yanshan Snowflakes as big as a seat".

Beijing Winter Olympics, the reception desk will accompany you.

together for a shared future