Photo taken on Jan 22, 2018 shows scenery at the Great Wall in Beijing, capital of China. Some parts of Beijing, Tianjin and Hebei province embraced a snowfall from Jan 21 to 22. [Photo/Xinhua]

A sanitary worker sweeps the street after a snowfall in Xinle city, North China’s Hebei province, Jan 22, 2018.[Photo/Xinhua]

A traffic policeman directs traffic after a snowfall in Hengshui, North China’s Hebei province, Jan 22, 2018. [Photo/Xinhua]

Photo taken on Jan 22, 2018 shows scenery at the drum tower in Jixian county, North China’s Tianjin.[Photo/Xinhua]

People walk in Nankai University in North China’s Tianjin, Jan 22, 2018. [Photo/Xinhua]