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Aerial photo taken on July 31, 2018 shows the scenery of the Awancang Wetland in Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province. (Xinhua/Chen Bin)
Aerial photo taken on July 31, 2018 shows the scenery of the Awancang Wetland in Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province. (Xinhua/Chen Bin)