Wang Jun in Youzhou remained loyal to the Eastern Jin regime in Jiankang and repelled several attacks by one of Liu Yuan's subordinates, Shi Le, an ethnic Jie. Shi Le then used wealth to buy off Wang Jun's ally, Duan Jilujuan and Duan Mopei. This angered Wang Jun, who arranged for the Tuoba Xianbei from the west to attack the Duan Xianbei, but the latter prevailed. In 314, Shi Le pretended to surrender to Wang Jun, who fell for the ruse and lowered his guard. Shi Le then captured and killed Wang Jun, but You Prefecture fell to the control of Duan Pidi, of the Xianbei Duan clan. In 319, Shi Le, founded his own kingdom, the Later Zhao, in Xiangguo (modern day Xingtai, Hebei Province), defeated Duan Pidi and captured You Prefecture.