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Aerial photo taken on Oct. 16, 2018 shows the autumn scenery of Xixiasong scenic area in Chengxian County of Longnan, northwest China's Gansu Province. (Xinhua/Chen Bin)
Aerial photo taken on Oct. 16, 2018 shows the autumn scenery of Xixiasong scenic area in Chengxian County of Longnan, northwest China's Gansu Province. (Xinhua/Chen Bin)