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
Aerial photo shows birds in the Yellow River Wetland National Nature Reserve in Luoyang City, central China's Henan Province, Dec. 5, 2019. (Xinhua/Feng Dapeng)
Aerial photo shows birds in the Yellow River Wetland National Nature Reserve in Luoyang City, central China's Henan Province, Dec. 5, 2019. (Xinhua/Feng Dapeng)