Skaters of Japan (Back) and Kazakhstan (Front) take part in a training session at the National Speed Skating Oval in Beijing, capital of China, Jan. 31, 2022. (Xinhua/Wu Wei)

Skaters of Japan take part in a training session at the National Speed Skating Oval in Beijing, capital of China, Jan. 31, 2022. (Xinhua/Wu Wei)

Skaters take part in a training session at the National Speed Skating Oval in Beijing, capital of China, Jan. 31, 2022. (Xinhua/Wu Wei)

Skaters take part in a training session at the National Speed Skating Oval in Beijing, capital of China, Jan. 31, 2022. (Xinhua/Wu Wei)

Jordan Stolz of the United States takes part in a training session at the National Speed Skating Oval in Beijing, capital of China, Jan. 31, 2022. (Xinhua/Wu Wei)

Skaters of Poland take part in a training session at the National Speed Skating Oval in Beijing, capital of China, Jan. 31, 2022. (Xinhua/Wu Wei)