《魏书·列传·卷十二》
太宗时，和崔玄伯、封懿、梁越等人入宫讲授经书典籍，出宫议论朝廷政事。
太宗世，与崔玄伯、封懿、梁越等入讲经传，出议朝政。
During the reign of Taizong, he taught scriptures with Cui Xuanbo, Feng Yi, Liang Yue and others, and discussed political affairs in the court after leaving the palace.