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Photo taken on Dec. 11, 2018 shows a frozen leaf in Wulingyuan District of Zhangjiajie, central China's Hunan Province. (Xinhua/Wu Yongbing)
Photo taken on Dec. 11, 2018 shows a frozen leaf in Wulingyuan District of Zhangjiajie, central China's Hunan Province. (Xinhua/Wu Yongbing)