Photo taken on Jan. 3, 2017 shows a fog-bound building in Hefei, capital of east China's Anhui Province. A red alert for fog in large parts of China was issued by the National Meteorological Center on Tuesday. (Xinhua/Guo Chen)
Photo taken on Jan. 3, 2017 shows a fog-bound building in Hefei, capital of east China's Anhui Province. A red alert for fog in large parts of China was issued by the National Meteorological Center on Tuesday. (Xinhua/Guo Chen)