People clear off snow at a parking lot in Beijing, capital of China, Jan. 20, 2013. Snowfall here relieves the air pollution but affects the local traffic in the city. (Xinhua/Jin Liwang) 
(Xinhua/Jin Liwang) 
(Xinhua/Jin Liwang) 
(Xinhua/Jin Liwang) 
(Xinhua/Jin Liwang) 
(Xinhua/Jin Liwang) Heavy snow hit Beijing on Sunday after days of smog. The snowfall is expected to relieve the air pollution but affect traffic in the city.