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In this aerial photo taken on Oct. 18, 2018, two tourists walk on a wooden footpath in the Yunping Three Gorges natural scenic area in Liangdang County of Longnan, northwest China's Gansu Province. Made up of the Tudi Gorge, the Guanyin Gorge and the Xigou Gorge, the Yunping Three Gorges lie deep within the valleys in Liangdang County in the southeastern part of Gansu Province. (Xinhua/Chen Bin)
