Athletes of Chinese national cross-country skiing team take part in a training session preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 11, 2021. (Xinhua/Hu Huhu)
Shang Jincai, an athlete of Chinese national cross-country skiing team, takes part in a training session preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 9, 2021. (Xinhua/Hu Huhu)
Athletes of Chinese national cross-country skiing team take part in a training session preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 9, 2021. (Xinhua/Hu Huhu)
An athlete of Chinese national cross-country skiing team arrives at the training field before a training session preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 12, 2021. (Xinhua/Hu Huhu)
Athletes of Chinese national cross-country skiing team compete during an intra-team simulation competition preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 12, 2021. (Xinhua/Hu Huhu)
An athlete of Chinese national cross-country skiing team competes in an intra-team simulation competition preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 12, 2021. (Xinhua/Hu Huhu)
Athletes of Chinese national cross-country skiing team take part in a training session preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 9, 2021. (Xinhua/Hu Huhu)
Torsongan Bullik, an athlete of Chinese national cross-country skiing team, looks on after an intra-team simulation competition preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 12, 2021. (Xinhua/Hu Huhu)
Athletes of Chinese national cross-country skiing team compete during an intra-team simulation competition preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 12, 2021. (Xinhua/Hu Huhu)
Athletes of Chinese national cross-country skiing team compete during an intra-team simulation competition preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 12, 2021. (Xinhua/Hu Huhu)
Athletes of Chinese national cross-country skiing team compete during an intra-team simulation competition preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 12, 2021. (Xinhua/Hu Huhu)
Athletes of Chinese national cross-country skiing team take part in a training session preparing for the Beijing 2022 Olympic Winter Games in Zhangjiakou City, north China's Hebei Province, on Dec. 9, 2021. (Xinhua/Hu Huhu)