Western barbarians (Gansu, Shaanxi, Sichuan), relatives to the Qiang 羌. When the Han 漢 conquered these territories, the Di drew back to the mountains, later their chieftains were installed as local governors. Largest tribe: Baima-Di 白馬氐. At the end of Han, local chieftains proclaimed themselves king (King Agui 阿貴 of Xing 興國, King Qianwan 千萬 of the Baiqing-Di 百頃氐). Cao Cao 曹操 resettled numerous Di tribes to the west to prevent uprisings within his own empire. Under the economical and political pressure during the Western Jin (Xijin) 西晉, the chieftain Qi Wannian 齊萬年 was proclaimed emperor and rebelled. The Di chieftain Fu Jian 苻堅 founded the Western Qin (Xiqin) 西秦 empire and reunited the splintered north of China. Di general Lü Guang 呂光 founded the Later Liang (Houliang) 後涼 empire, the Di chieftain Yang Ding 楊定 founded the empire of Chouchi 仇池. After the reunification of the north by Northern Wei (Beiwei) 北魏, the Di vanished.