Planes are parked on the snow-covered tarmac at Urumqi International Airport in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, Dec. 26, 2010. Heavy snow attacked Urumqi Saturday and caused flights delayed at airport. [Xinhua]

Snowplows clear runways at Urumqi International Airport in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, Dec. 26, 2010. Heavy snow attacked Urumqi Saturday and caused flights delayed at airport. [Xinhua]