What are some brief excerpts from the contents of the 2022 Winter Olympics?

1. The torch "Flying" of Beijing 2022 Winter Olympics and Paralympics was officially released on the first anniversary of the countdown to the Winter Olympics. Beijing 2022 Winter Olympics and Paralympics Torch "Flying" made a stunning appearance in the Water Cube of the National Aquatics Center.

The moment when Beijing becomes the first "Double Olympic City" in Olympic history is approaching. The surface of the torch gradually transited from Xiangyun pattern to paper-cut snowflake pattern from bottom to top, which engraved the steps of the city from Summer Olympics to Winter Olympics and witnessed the Olympic complex planted in people's hearts since the 2008 Beijing Olympic Games.

3. Han Zongjie, a senior engineer of China Aerospace Science and Technology Corporation who participated in the torch research and development, introduced that many technical problems such as flame color and stability, high-pressure hydrogen storage and safe utilization of hydrogen energy were solved during the torch development.

4. "Lightweight"-compared with aluminum alloy with the same volume, carbon fiber composites are lighter than 20%; "Strong"-this material has the characteristics of high strength, corrosion resistance, high temperature resistance, friction resistance and ultraviolet radiation resistance; "Beauty"-the application of internationally advanced three-dimensional knitting molding technology to weave high-performance fibers into such a beautiful whole with complex shapes.

Another technical highlight of Yang Fei is that the torch shell is made of light and high temperature resistant carbon fiber, and the torch burning tank is also made of carbon fiber. Huang Xiangyu, a carbon fiber expert and deputy general manager of China Petrochemical Shanghai Petrochemical Co., Ltd., said that the shell made of carbon fiber and its composite materials presents the characteristics of "light, solid and beautiful".