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A horse rider performs during the traditional annual Shoton Festival in Lhasa, capital of southwest China's Tibet Autonomous Region, Aug. 23, 2017. (Xinhua/Purbu Zhaxi)

A horse rider performs during the traditional annual Shoton Festival in Lhasa, capital of southwest China's Tibet Autonomous Region, Aug. 23, 2017. (Xinhua/Purbu Zhaxi)