Tourists have fun in the ice rink at the Summer Palace in Beijing, capital of China, Jan. 7, 2018. During the weekend, many people came to the ice rink on Kunming Lake to relax or take exercise.(Xinhua/Liu Xianguo)

A tourist rides an ice bike in the ice rink at the Summer Palace in Beijing, capital of China, Jan. 7, 2018. During the weekend, many people came to the ice rink on Kunming Lake to relax or take exercise.(Xinhua/Liu Xianguo)