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Tourists visit the forest of populus euphratica, commonly known as desert poplar, in the Mogao Township of Dunhuang City, northwest China's Gansu Province, Oct. 6, 2018. (Xinhua/Zhang Xiaoliang)
Tourists visit the forest of populus euphratica, commonly known as desert poplar, in the Mogao Township of Dunhuang City, northwest China's Gansu Province, Oct. 6, 2018. (Xinhua/Zhang Xiaoliang)