Li Yifan (1st R) of Snow Sports Management Center of Sports Bureau of Jilin Province competes during the Men's Sprint (1.3km) Classical Technique event at the 2020 National Cross-Country Skiing Invitational Tournament in Jilin City, northeast China's Jilin Province, Oct. 1, 2020. (Xinhua/Xu Chang)

Athletes check in before the Women's Sprint (1.3km) Classical Technique event at the 2020 National Cross-Country Skiing Invitational Tournament in Jilin City, northeast China's Jilin Province, Oct. 1, 2020. (Xinhua/Xu Chang)

Sun Qinghai (1st R) of Heilongjiang Snow Training Center competes during the Men's Sprint (1.3km) Classical Technique event at the 2020 National Cross-Country Skiing Invitational Tournament in Jilin City, northeast China's Jilin Province, Oct. 1, 2020. (Xinhua/Xu Chang)

Li Lei (C) of Winter Sports Management Center of Changchun City competes during the Women's Sprint (1.3km) Classical Technique event at the 2020 National Cross-Country Skiing Invitational Tournament in Jilin City, northeast China's Jilin Province, Oct. 1, 2020. (Xinhua/Xu Chang)

Meng Honglian (1st L) of Heilongjiang Snow Training Center competes during the Women's Sprint (1.3km) Classical Technique event at the 2020 National Cross-Country Skiing Invitational Tournament in Jilin City, northeast China's Jilin Province, Oct. 1, 2020. (Xinhua/Xu Chang)