Tibetan Buddhist believers walk around the Potala Palace for praying in Lhasa, southwest China's Tibet Autonomous Region, June 2, 2015. The month-long Sakadawa Festival, which starts on the First Day of the Fourth Month of the Tibetan Calendar, is celebrated by Tibetan Buddhists to commemorate Sakyamuni's birth, enlightenment and death. (Xinhua/Zhang Rufeng)
Tibetan Buddhist believers walk around the Potala Palace for praying in Lhasa, southwest China's Tibet Autonomous Region, June 2, 2015. The month-long Sakadawa Festival, which starts on the First Day of the Fourth Month of the Tibetan Calendar, is celebrated by Tibetan Buddhists to commemorate Sakyamuni's birth, enlightenment and death. (Xinhua/Liu Dongjun)