How to type ＂ONE FAMILY＂？ Revealing the ＂Chinese Romantic Magician＂ behind the Winter Olympics Fireworks

　　Authors: Xinhua Daily Telegraph reporter Liu Fangzhou and Yu Chunsheng

　　Global Connection | These splendors are painted by them in the sky.

　　On February 20th, after a splendid fireworks display, the 2022 Winter Olympics officially came to an end. The vertical "Five Rings" and the horizontal "Five Rings" symbolize the "Double Olympic City", and the "ONE FAMILY" has written down the grand theme of the community of human destiny. The "Willows-breaking Farewell" at the closing ceremony echoes the "Welcome Pine" fireworks at the opening ceremony, and the charm of the Olympic Games is blooming above the Bird’s Nest.

　　"This is the romance engraved in Chinese’s bones." Countless netizens were moved by the fireworks display at the opening and closing ceremonies and recorded their excitement on social platforms.Below the Bird’s Nest, there is a fireworks technical team from Hunan, looking up at the fireworks installed by themselves, which is their "magic" in the sky.

　　More than 100 times of debugging and 90 seconds of highlights.

　　The Olympic flame was slowly extinguished, and the "Five Rings" fireworks soared. The fireworks display at the closing ceremony of the Winter Olympics lasted for 90 seconds, but before that, the technical debugging was as many as 100 times.

　　Liu Yongzhang, technical director of the fireworks support group of the service support headquarters for the opening and closing ceremonies of the Beijing Winter Olympics, comes from Dongxin Fireworks Group in Liuyang, Hunan. During the opening and closing ceremonies of the Beijing Winter Olympics, he participated in the whole process of product design, experimental design, production and fireworks display.

　　“We spent three or four months before and after,What I did in the early stage was the product test. "Liu Yongzhang said,"All special effects products are not a single R&D product, but a combination of R&D products."

　　Combination means double the difficulty. Not only should the effects of all products be within the ideal design range, but also a set of discharge devices that can successfully present special effects should be designed.

　　"In order to achieve the most ideal effect,We add the parameters of research and development through 3D simulation.Then make the whole fireworks display device according to the simulation demonstration. Liu Yongzhang said that because the technical requirements involved in the special-effect fireworks display are very detailed,The team debugged hundreds of times before and after.Until the month before the opening ceremony, it was still slowly tested to improve the shortcomings of fireworks.

　　The highly anticipated "welcoming pine" is such a little "polished" work. Because the pine needles of "Welcome Pine" grow upward, and the fireworks explode with fireworks in both directions, Liu Yongzhang’s team has made a lot of efforts to make it form a perfect pattern in the air.

　　"For ‘ Welcome pine ’ Products,In what range and area should it be detonated, and what is the launch time over it?We have all gone through repeated experiments to adjust, and some of them are measured by machinery and equipment. "Liu Yongzhang said.

　　Not only is it unique and full of cultural implications,The fireworks at the opening and closing ceremonies of the Beijing Winter Olympics are the ultimate in "simplicity" and "environmental protection".

　　On February 20th, Cai Guoqiang, the chief designer of visual arts for the opening and closing ceremonies of the Beijing Winter Olympics, said in an interview with the media that,The fireworks at the opening and closing ceremonies add up to less than one tenth of those used in the 2008 Olympic Games.In this regard, Liu Yongzhang is also deeply touched.

　　"This time, unlike in the past, a lot of fireworks were set off to set off the atmosphere. The fireworks display at the opening and closing ceremonies of the Winter Olympics is more displayed in the form of pictures. In addition to setting off the atmosphere, it also contains cultural content. "

　　Liu Yongzhang also introduced that all the fireworks set off at the opening and closing ceremonies were paperless through the adjustment of technology and materials, and no paper scraps were produced after the discharge, which greatly reduced the pollution to the environment.

　　Southerners’ "Fighting in the Snow"

　　One month before the opening of the Winter Olympics, Liu Yongzhang arrived in Beijing with an installation team of more than 100 people and began to install and debug the discharge device. Most of the team members are from Hunan. Apart from working high above the complex steel frame at the top of the Bird’s Nest, they also have to "bathe in the snow" in the heavy snow in the north.

　　"It just snowed heavily during the first rehearsal.The steel beams at the top of the bird’s nest are basically covered with snow, and they are all slippery, so we can only lie prone and grope on them."Liu Yongzhang said.

　　The steel beams at the top of the bird’s nest are inclined at different angles, and some are even steep. "The station is unstable, and we have to take products and equipment to install it," said a member of the installation team. "The snow in Beijing is not like that in the south, and it won’t melt immediately when we land. If we stay on it for a short time, we will all be covered with snow, like ‘ Snowman ’ Same. "

　　The shape of the steel beam at the top of the Bird’s Nest is irregular and narrow, and the width is basically within one meter. Almost all special fireworks products should be arranged on the steel beam.

　　"After all the azimuth angles are simulated and calculated by ourselves on the computer, they will be restored at the scene according to the actual situation." Liu Yongzhang said that this has become the biggest difficulty in ensuring the effect of fireworks."For example, when a string of English letters comes out, it is necessary to ensure that its spacing is consistent and there can be no crossing. This is a slow process."

　　The shocking fireworks with subtitles of "ONE WORLD" and "ONE FAMILY" were arranged and installed bit by bit. According to Liu Yongzhang, the total coverage of the two strings of English letters is 320-400 square meters, among which the rotatable and angle-adjustable fixture,Every screw and nut should be as thin as the width and inclination of each steel beam on the top of the Bird’s Nest."Through careful construction, the height and skewness of each installed bouquet are basically the same, and the best visual effect is achieved when it is set off."

　　In order to ensure foolproof, the technical team reserved protective measures for unexpected situations such as rain and snow during the whole installation period, and adopted dual-system control for all fireworks display.

　　"The staff in the team have rich experience and tenacious fighting spirit. Everyone Qi Xin worked together without any mistakes and no duds." Liu Yongzhang said, "When the two fireworks were set off, we saw with our own eyes that our achievements brought so much joy, satisfaction and pride to the audience, and we felt that all the efforts were worth it."

　　The "Youth Power" Behind the Gorgeous Fireworks

　　In the Beijing Winter Olympics, many "post-00" athletes shine brilliantly, showing the vitality and strength of young people in China to the world. There is also a "youth team" in the fireworks support team, which plays a leading role in the installation and inspection of fireworks.

　　Gong Luoping, from the fireworks technology and management major of Hunan Vocational College of Safety Technology, participated in the fireworks display at the opening and closing ceremonies of the Winter Olympics together with his four classmates, and was assigned to the "special effects group", which was responsible for transporting and installing the modeling frame, connecting the fire heads, detecting the fire heads, laying lines, installing protective measures and so on.

　　As an operator, Gong Luoping should not only ensure the installation efficiency and his own safety, but also prevent articles from falling on the protective film of the Bird’s Nest at all times, so the difficulty coefficient of construction is doubled.

　　"After the snow,Several times we have to climb to the top of the bird’s nest to sweep the snow first.Start the installation again. It’s hard to sweep the snow, but it’s also very rewarding. "Gong Luoping said.

　　"Since last summer, we have adjusted the equipment during the day, tried the effect at night, and improved the products little by little. This is knowledge that we don’t have in books, and it is also a valuable learning experience." Gong Luoping said.

　　Gong Luoping spent the Spring Festival at the construction site, and his family all stood in front of the TV on time waiting to watch the opening and closing ceremonies, especially the fireworks display. "After the opening ceremony, my family called me the first time.Saying that our fireworks are particularly beautiful and shocking, I feel as happy as if I were on TV."

　　When the Chinese and English fireworks of "One Family in the World" were in perfect bloom, Gong Luoping heard the cheers resounding through the entire Bird’s Nest."At that moment, there was a sense of release that a stone finally landed in my heart, and I was extremely proud and proud."

　　"This Winter Olympics is an experience that I can remember for a lifetime." Gong Luoping said, "As a fireworks major, I feel that many things I read in books have become a reality in my own and my team’s hands. This has also deepened my understanding of the fireworks profession. In the future, I want to devote myself more to this industry and design and produce more good works that show the cultural heritage of China. " (Participating in writing: intern Huang Zejing)