《魏书·列传·卷七十六》
二十岁时，太守崔楷征他为功曹，起之于家而任太学博士、明威将军。
弱冠，太守崔楷辟为功曹，起家太学博士、明威将军。
At the age of twenty, he was appointed as a staff officer by the prefect Cui Kai, and then he was appointed as a doctor of Tai Xue and general of Ming Wei.