《新唐书·列传·卷二十六》
武德元年，升任内史令，高祖把机要事务委托给他，宫庭内外各项政务全都让他参与处理。
武德元年迁内史令，帝委以枢管，内外百务悉关决。
In the first year of Wude, he was promoted to the rank of Minister of Internal History. Emperor Gaozu entrusted him with important affairs, and he was involved in all political affairs inside and outside the palace.