Pedestrians walk in fog-bound Lianyungang City, east China's Jiangsu Province, Jan. 3, 2017. A red alert for fog in large parts of China was issued by the National Meteorological Center on Tuesday. (Xinhua/Shao Shixin)
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Pedestrians walk in fog-bound Lianyungang City, east China's Jiangsu Province, Jan. 3, 2017. A red alert for fog in large parts of China was issued by the National Meteorological Center on Tuesday. (Xinhua/Shao Shixin)