A policeman helps a driver to push vehicle on the No. 217 national highway in Altay, northwest China's Xinjiang Uygur Autonomous Region, Feb. 24, 2011. Heavy snow and strong wind hit Altay from Wednesday to Thursday. Some 200 vehicles and more than 500 people trapped on the highway due to the weather have been transfered to safety area after four hours' rescue. [Xinhua/Ye Erjiang]