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Aerial photo taken on Jan. 22, 2019 shows the fog scenery in Wanshan District of Tongren City, southwest China's Guizhou Province. (Xinhua/Wu Weidong)
Aerial photo taken on Jan. 22, 2019 shows the fog scenery in Wanshan District of Tongren City, southwest China's Guizhou Province. (Xinhua/Wu Weidong)