Aerial photo taken on Nov 19, 2016 shows the scenery of sea of clouds in Tianzi Mountain of Zhangjiajie, Central China's Hunan province. (Photo/Xinhua)
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Aerial photo taken on Nov 19, 2016 shows the scenery of sea of clouds in Tianzi Mountain of Zhangjiajie, Central China's Hunan province. (Photo/Xinhua)