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
Aerial photo taken on March 21, 2018 shows the Liujiaxia Reservoir in Yongjing County, northwest China's Gansu Province. The Liujiaxia Reservoir is a major reservoir on the upper reaches of Yellow River. (Xinhua/Chen Bin)
Aerial photo taken on March 21, 2018 shows the Liujiaxia Reservoir in Yongjing County, northwest China's Gansu Province. The Liujiaxia Reservoir is a major reservoir on the upper reaches of Yellow River. (Xinhua/Chen Bin)