People walk in the rain in Dalian, a coastal city in northeast China's Liaoning Province, Nov. 7, 2010. A cold front was sweeping the northern parts of China, causing snowfall or sleet and making the temperature drop in the areas. (Xinhua/Liu Debin)

People walk in the rain in Dalian, a coastal city in northeast China's Liaoning Province, Nov. 7, 2010. A cold front was sweeping the northern parts of China, causing snowfall or sleet and making the temperature drop in the areas. (Xinhua/Liu Debin)