An ice waterfall is photographed in Daqing Mountain in Hohhot, capital city of North China's Inner Mongolia autonomous region, on Dec 22. In recent years, with the gradual improvement of the environment in Hohhot's urban area, the ecology of the suburbs and the surrounding Daqing Mountain has also gradually recovered. [Photo/northnews.cn]

A visitor focuses her lens on the ice waterfall in Daqing Mountain, Hohhot, Inner Mongolia, Dec 22. [Photo/northnews.cn]