After helped more than 70 drivers to push their cars out of snow, Wang Zhuji, a traffic police in Dalian, northeast China's Liaoning Province was so exhausted that he kneed on ground for rest. On Feb.13, 2016, the last day of the nationwide Spring Festival holiday, most roads across China experience heavy traffic. In order to keep traffic smooth, traffic police is on duty despite of severe weather condition. (Photo/Weibo account of CCTV)