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A herd of kiangs (Equus kiang) gallop in the Altun Mountains National Nature Reserve in northwest China's Xinjiang Uygur Autonomous Region, April 1, 2018. (Xinhua/Jiang Wenyao)

A herd of kiangs (Equus kiang) gallop in the Altun Mountains National Nature Reserve in northwest China's Xinjiang Uygur Autonomous Region, April 1, 2018. (Xinhua/Jiang Wenyao)