A tourist walks amid frozen waterfalls in the Huhushui scenic area in Pingshan County, north China's Hebei Province, Dec. 25, 2019. (Photos: Xinhua)

A tourist takes photos of frozen waterfalls in the Huhushui scenic area in Pingshan County, north China's Hebei Province, Dec. 25, 2019.

Aerial photo taken on Dec. 25, 2019 shows frozen waterfalls in the Huhushui scenic area in Pingshan County, north China's Hebei Province.