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Tourists ride camels as visiting the Crescent Spring and Singing Sand Dune scenic area in Dunhuang, northwest China's Gansu Province, Nov. 12, 2017. (Xinhua/Zhang Xiaoliang)
Tourists ride camels as visiting the Crescent Spring and Singing Sand Dune scenic area in Dunhuang, northwest China's Gansu Province, Nov. 12, 2017. (Xinhua/Zhang Xiaoliang)