People bundled up against the cold walk in New York's mid-town Manhattan, on Jan. 25, 2013, as cold continues to grip the northeast U.S. (Xinhua/Wang Chengyun)

People bundled up against the cold walk in New York's mid-town Manhattan, on Jan. 25, 2013, as cold continues to grip the northeast U.S. (Xinhua/Wang Chengyun)

A woman bundled up against the cold walks in New York's mid-town Manhattan, on Jan. 25, 2013, as cold continues to grip the northeast U.S. (Xinhua/Wang Chengyun)

A woman bundled up against the cold walks in New York's mid-town Manhattan, on Jan. 25, 2013, as cold continues to grip the northeast U.S. (Xinhua/Wang Chengyun)

People bundled up against the cold walk in New York's mid-town Manhattan, on Jan. 25, 2013, as cold continues to grip the northeast U.S. (Xinhua/Wang Chengyun)

People take photographs of the frozen fountain in New York's Bryant Park, in mid-town Manhattan, on Jan. 25, 2013, as cold continues to grip the northeast U.S. (Xinhua/Wang Chengyun)

People bundled up against the cold walk in Central Park in New York, on Jan. 25, 2013, as cold continues to grip the northest U.S. (Xinhua/Wang Chengyun)

People bundled up against the cold walk in New York's mid-town Manhattan, on Jan. 25, 2013, as cold continues to grip the northeast U.S. (Xinhua/Wang Chengyun)

People bundled up against the cold walk in Central Park in New York, on Jan. 25, 2013, as cold continues to grip the northest U.S. (Xinhua/Wang Chengyun)