A ceremony is held to mark the 600th anniversary of the founding of the Drepung Monastery in Lhasa, southwest China's Tibet Autonomous Region, Oct. 12, 2016. Built in 1416 on the outskirts of Lhasa, the Drepung Monastery is the largest and most influential monastery of the Gelug Sect, a branch of the Tibetan Buddhism. (Xinhua/Purbu Zhaxi)