Photo taken on Feb. 13, 2022 shows the snow scenery at the National Aquatics Centre in Beijing, capital of China. (Xinhua/Liu Xu)

Photo taken on Feb. 13, 2022 shows the snow scenery at the National Aquatics Centre in Beijing, capital of China. (Xinhua/Huang Xiaobang)

Photo taken on Feb. 13, 2022 shows the snow scenery at the National Aquatics Centre in Beijing, capital of China. (Xinhua/Huang Xiaobang)

Photo taken on Feb. 13, 2022 shows the snow scenery at the National Aquatics Centre in Beijing, capital of China. (Xinhua/Liu Xu)

Photo taken on Feb. 13, 2022 shows the snow scenery at National Alpine Skiing Centre in Yanqing District, Beijing, capital of China. (Xinhua/Chen Yichen)

Staff members clean snow outside the Zhangjiakou Mountain Press Center in Zhangjiakou, north China's Hebei Province, Feb. 13, 2022. (Xinhua/Peng Ziyang)

A man takes photos of the mascots of Beijing 2022 Winter Olympics ad Paralympics outside the Main Media Center of Beijing Winter Olympics in Beijing, capital of China, Feb. 13, 2022. (Xinhua/Wu Wei)