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George Schaller stands near a lake in Baiyu Township of Jiuzhi County in Guoluo Tibetan Autonomous Prefecture, northwest China's Qinghai Province, May 24, 2019. (Xinhua/Zhang Hongxiang)

George Schaller stands near a lake in Baiyu Township of Jiuzhi County in Guoluo Tibetan Autonomous Prefecture, northwest China's Qinghai Province, May 24, 2019. (Xinhua/Zhang Hongxiang)