A citizen pushes his vehicle on a road in Mudanjiang City, northeast China's Heilongjiang Province, Nov. 25, 2013. As of noon on Monday, ten highways in Heilongjiang were closed, eight flights were canceled, and four airports had been closed. Heavy snowstorms will hit northeast China on Monday and Tuesday, while a cold front sweeps central and eastern China over the next three days, the National Meteorological Center (NMC) said on Monday. [Xinhua]