An aerial photo taken on Oct. 9, 2015 shows snowy terrace in Qinglanshan Township of Dingxi City, northwest China's Gansu Province. (Photo: Xinhua/Wang Hongbin)
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An aerial photo taken on Oct. 9, 2015 shows snowy terrace in Qinglanshan Township of Dingxi City, northwest China's Gansu Province. (Photo: Xinhua/Wang Hongbin)