 Some migrated from Tongxin 同心 and Mengxian 勐先 of Pu'er County 普洱县 (now renamed as Ning'er Hani and Yi Autonomous County) during the Republic of China era, while others migrated in 1971 from Lianhe 联合, Xin'an 新安, Xinfu 新抚, and Baliu 坝溜 townships of Mojiang County 墨江县.Subgroups include Biyue 碧约, Budu 布都, Kaduo 卡堕, Ximoluo 西摩洛, and Bukong 布孔.In Simao District, the Bulang people (population 272 as of 1990) live near the junction of the Xiaohei River 小黑江 and Lancang River 澜沧江, in the villages of Guanzhai 官寨, Tuanliangzi 团梁子, Mangbang 芒蚌, Mangba 芒坝, etc., in a total of six villages ("Simao Prefecture Almanac" 1993