Pedestrians walk in the snow on a street in Tongliao City, north China's Inner Mongolia Autonomous Region, Nov. 11, 2012. An extensive snowfall hit the eastern Inner Mongolia and western part of China's Northeast region on Sunday. [Xinhua]

Photo taken on Nov. 11, 2012 shows the snow-covered buildings in Hulun Buir, north China's Inner Mongolia Autonomous Region. An extensive snowfall hit the eastern Inner Mongolia and western part of China's Northeast region on Sunday. [Xinhua]

Staff members use tools to deice snow and ice on the rail tracks in Chifeng City, north China's Inner Mongolia Autonomous Region, Nov. 11, 2012. An extensive snowfall hit the eastern Inner Mongolia and western part of China's Northeast region on Sunday. [Xinhua]

Photo taken on Nov. 11, 2012 shows sculptures covered with snow on a square in Hulun Buir, north China's Inner Mongolia Autonomous Region. An extensive snowfall hit the eastern Inner Mongolia and western part of China's Northeast region on Sunday. [Xinhua]