TONGREN COUNTY, CHINA - AUGUST 5: A Tibetan child is inserted with long stainless steel needles into his cheek to ward off illness during a ceremony to worship mountain gods at Gadui Village on August 5, 2007 in Tongren County of Huangnan Tibetan Autonomous Prefecture, Qinghai Province, China. Tibetan and Tu ethnic minority group people from over 40 villages in Tongren County held the annual ''Liuyuehui'' festival in middle of the sixth lunar month each year to worship mountain gods, during which they drove away evil spirits and prayed for good luck.