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Photo taken on Oct. 29, 2019 shows birds flying over the wetland of Shahu Lake scenic area in northwest China's Ningxia Hui Autonomous Region. (Xinhua/Feng Kaihua)
Photo taken on Oct. 29, 2019 shows birds flying over the wetland of Shahu Lake scenic area in northwest China's Ningxia Hui Autonomous Region. (Xinhua/Feng Kaihua)