In the first year of Tianbao in the Tang Dynasty (742), the surname of Baihui people entered China, becoming the capital of teaching for Hui people in the Western Regions in Woods Lane (Huajue Lane) in Chang 'an (Xi 'an) County. Until the Yuan Dynasty to the 29th year of Yuan Dynasty (1292), General Ren Dingyuan and Guichi pro-army both commanded Ming 'an, commander of Huachi, and his son's surname was Bai. Bai Hui ethnic groups are mainly distributed in the northwest of China.