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Photo taken on Aug. 8, 2018 shows sea of clouds after a rainfall at Huangyaguan section of the Great Wall in Tianjin, north China. (Xinhua/Wang Guangshan)
Photo taken on Aug. 8, 2018 shows sea of clouds after a rainfall at Huangyaguan section of the Great Wall in Tianjin, north China. (Xinhua/Wang Guangshan)