At the 2021 X Games, Gu became the first woman ever to win three medals as a rookie, with a gold medal in both freeski superpipe and slopestyle and a bronze medal in freeski big air. With that, she also became the first athlete representing China to win a gold medal at the X Games, across both men's and women's disciplines. "It was [a] huge deal to me," Gu told Forbes. "That was the main reason that I decided to ski for China, to make that history and be that inspiration for a new generation of freeskiers, especially younger Chinese freeskiers."