Passengers walk past the mini hotels in Xi'an Xianyang International Airport, Xi'an, Shaanxi province, July 10, 2012. Mini hotel in the Terminal 3 of Xi'an airport opens for business Tuesday. Each room covers an area of three square meters and is equipped with bed, digital TV, laptop desk and a socket. It also has wireless Internet access. [Photo/Xinhua]

A staff member of the mini hotel shows room to guests, Xi'an Xianyang International Airport, Xi'an, Shaanxi province, July 10, 2012. [Photo/Xinhua]