A Chinese athlete sets off in men’s steel frame snowmobile competition of the Beijing 2022 Olympic Winter Games on January 11 at Snow Dragon, China’s National Snowmobile and Sled Center.

Snow Dragon is the world’s only snowmobile sledding arena built on a sunny slope. The track uses 80 tons of liquid ammonia for refrigeration, making it the refrigeration system filled with the most liquid ammonia in the world for similar projects.