People wait for bus in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Jianwei)

A policeman works in snow in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Jianwei)

A child plays on a square covered with snow in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Song)

A man moves a bike on Zhongshan Road in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Jianwei)

Vehicles move on Zhongshan Road in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Jianwei)

People dance on a square in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Song)

A man takes photos of snow scenery on a square in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Song)

Vehicles move on Zhongshan Road in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Jianwei)

Cleaners sweep snow at a community in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Song)

Cleaners sweep snow on a road in Harbin, capital of northeast China's Heilongjiang Province, Dec. 2, 2015. Heavy snowfall hit Heilongjiang on Wednesday. (Xinhua/Wang Song)