Gansu has been a multi-ethnic province since ancient times. 54 nationalities have inhabited here. Among its total population of 26.0334 million, the minority population takes up 2.199 million. Hui nationality is the largest in all the minority nationalities with a population of 1.185 million. Ten ethnic groups of  Hui. Tibet, Dongxiang, Tu, Yugu, Baoan, Mongolia, Sala, Hazak and Manchu have inhabited in Gansu for generations. Yugu, Dongxiang and Baoan are unique nationalities. The expected average life span is about 70.39 years in the whole province.