XINING, CHINA - JULY 6: (CHINA OUT) Muslims pray at the Dongguan Mosque on July 6, 2006 in Xining of Qinghai Province, China. The Dongguan Mosque is the largest mosque in Qinghai Province and one of the four greatest mosques in Northwest China. It was established during the Ming Dynasty (1368-1644), and has a history of about six hundred years. It is the most well-preserved ancient building, as well as the center and the highest-level institution of Islamic learning in Northwest China. About 30,000 Muslims pray at the mosque every Friday, according to local media. (Photo by China Photos/Getty Images)
