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Citizens walk by the Yuehai lake in Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, Dec. 13, 2017. The lake is the biggest wetland in the city. (Xinhua/Li Ran)
Citizens walk by the Yuehai lake in Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, Dec. 13, 2017. The lake is the biggest wetland in the city. (Xinhua/Li Ran)