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Swans frolic in Luoping Lake, a stop-over for wintering migratory birds, in the Chabei area of Zhangjiakou, north China's Hebei Province, Nov. 18, 2018. (Xinhua/Yang Shiyao)
Swans forage in Luoping Lake, N China's Hebei
Source: Xinhua| 2018-11-18 22:04:14|Editor: Li Xia
