Passengers walk out after the maiden flight of the carrier's Lhasa-Tianjin route arrives in Tianjin, north China, October 29, 2013. Tibet Airlines and Tianjin Binhai International Airport launched an air route linking Tianjin, Mianyang City and Lhasa on Tuesday. (Xinhua/Yue Yuewei)

Cabin crew of Tibet Airlines walk out after the maiden flight of the carrier's Lhasa-Tianjin route arrives in Tianjin, north China, Oct 29, 2013. Tibet Airlines and Tianjin Binhai International Airport launched an air route linking Tianjin, Mianyang City and Lhasa on Tuesday. (Xinhua/Yue Yuewei)