In February 2022, the Beijing Winter Olympics will be grandly opened, and Beijing will also become the first "Double Olympic City" in the history of the Olympic Games to host the Summer Olympics and the Winter Olympics. From the Summer Olympics to the Winter Olympics, countless people have made contributions silently behind the scenes, and Li Jiulin, the "Chief Engineer of the Double Olympics" and the chief engineer of Beijing Urban Construction Group, is one of the representatives.

Whether it is the stunning main venue of the 2008 Beijing Olympic Games - the "Bird's Nest" of the National Stadium of China, or the iconic venue of the 2022 Beijing Winter Olympics - the "Ice Ribbon" of the National Speed Skating Stadium, the chief engineer is Li Jiulin. The distance between the two venues is only 4 kilometers. He has led the technical team for 15 years. He has led the team to continuously break through technical bottlenecks, dedicated the world's leading Chinese wisdom and Chinese solutions to the construction of the Double Olympics venues, and used technology to write the "Double Olympics" legend.Editor/Ma Xue