Islam was introduced to Yunnan in 1253 when Kublai Khan; the fifth emperor of the Yuan Dynasty; pacified Dali. In 1273; Sayyid All Omer Shams al-Din was appointed Prime Minister (now called governor) of Yunnan. During his reign; he established 12 mosques in Kunming. Islam has since spread all over Yunnan Province; mainly in Kunming; Yuxi; Honghe; Wenshan; Dali; Baoshan; Zhaotong; Chuxiong; Simao; and Qujing prefectures and municipalities. Many ethnic Hui; some Dais; Bais; Tibetans and Zhuangs have converted to Islam. There were an estimated 500;000 Muslims in Yunnan in May 1996; and some 717 mosques in service.