The Lahu are an ethnic group of Southeast Asia and of China where they are one of the 56 ethnic groups officially recognized. About 450,000 live in Yunnan province. An estimated 150,000 live in Burma. In Thailand, Lahu are one of the six main hill tribes, and their population is estimated at around 100,000. The Tai often refer to them by the exonym 'Mussur', meaning hunter. About 10,000 live in Laos. They are one of 54 ethnic groups in Vietnam, where about 1,500 live in Lai Chau province.