Buddhists wearing masks attend a ceremony depicting stories of Gods and ghosts in Tibetan Buddhism at the Taer (Gumbum) Monastery in Huangzhong county of Xining, capital of Northwest China's Qinghai Province, May 31, 2015. The ceremony, which is called "Tiao Qian" in Chinese, was held on Sunday at the monastery, the birth place of Tsongkhapa, founder of the Geluk school of Tibetan Buddhism. [Photo/Chinanews.com]