Monks are seen on a train from Lhasa of southwest China's Tibet Autonomous Region to Xining of Qinghai Province after pilgrimages on May 27, 2016. The quantity of pilgrims by train from Sichuan, Gansu and Qinghai provinces to Lhasa increased year by year as China's Qinghai-Tibet Railway opened on July 1, 2006. (Xinhua/Jigme Dorje) 

 A passenger reads at a waiting room of Lhasa Railway Station in Lhasa, southwest China's Tibet Autonomous Region, Jan. 24, 2016. The quantity of pilgrims by train from Sichuan, Gansu and Qinghai provinces to Lhasa increased year by year as China's Qinghai-Tibet Railway opened on July 1, 2006. (Xinhua/Jigme Dorje)