Swans are seen on the Guanting Reservoir in Huailai County, north China's Hebei Province, Nov. 14, 2017. (Xinhua/Yang Shiyao)
RIGHT BG
Swans are seen on the Guanting Reservoir in Huailai County, north China's Hebei Province, Nov. 14, 2017. (Xinhua/Yang Shiyao)