《晋书·志·第三章》
升平元年，慕容俊占据临漳，完全拥有幽州、并州、青州、冀州地域。
升平元年，慕容俊遂据临漳，尽有幽、并、青、冀之地。
In the 1st year of the Shengping reign, Murong Jun seized control of Linzhang and gained all of Youzhou, Bingzhou, Qingzhou and Jizhou.