Tibetan monks perform traditional masked dance at the annual religious dance festival of Tashilhunpo Monastery in Shigatse of Tibet Autonomous Region on September 9, 2013. The annual festival falls on August 4 according to the Tibetan calendar. Tashilhunpo Monastery, founded in 1447, is the traditional seat of successive Panchen Lamas and one of the six big monasteries of Gelugpa in Tibet. [Photo/CNS]