Photo taken on July 18, 2017 shows the Gahai lake in Luqu County of Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province. (Xinhua/Chen Yehua)
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Photo taken on July 18, 2017 shows the Gahai lake in Luqu County of Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province. (Xinhua/Chen Yehua)