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Black-necked cranes rest at the Caohai National Nature Reserve in Weining, southwest China's Guizhou Province, Jan. 18, 2019. (Xinhua/Yang Wenbin)
Black-necked cranes rest at the Caohai National Nature Reserve in Weining, southwest China's Guizhou Province, Jan. 18, 2019. (Xinhua/Yang Wenbin)