This aerial photo taken on April 2, 2018 shows a wild yak in the Altun Mountains National Nature Reserve in northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Jiang Wenyao)
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This aerial photo taken on April 2, 2018 shows a wild yak in the Altun Mountains National Nature Reserve in northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Jiang Wenyao)
