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Migrant birds fly over the wetland in Momoge National Nature Reserve in Zhenlai County, Baicheng City of northeast China's Jilin Province, April 9, 2020. (Xinhua/Zhang Nan)
Migrant birds fly over the wetland in Momoge National Nature Reserve in Zhenlai County, Baicheng City of northeast China's Jilin Province, April 9, 2020. (Xinhua/Zhang Nan)