Planes are seen on the parking apron at Xi'an Xianyang International Airport in Xi'an, capital of northwest Shaanxi Province, November 11, 2009. More than 80 flights were delayed and over 10,000 passengers were stranded at the airport, thanks to a heavy snowfall which hit Xi'an on November 11. [Xinhua]

Passengers wait in the departure hall of the Xi'an Xianyang International Airport in Xi'an, capital of northwest Shaanxi Province, November 11, 2009. More than 80 flights were delayed and over 10,000 passengers were stranded at the airport, thanks to a heavy snowfall which hit Xi'an on November 11. [Xinhua]