《旧唐书·本纪·卷十七》
二十一日，任《周易》博士李训为兵部郎中、知制诰，带翰林侍讲学士衔。
甲子，以《周易》博士李训为兵部郎中、知制诰，依前充翰林侍讲学士。
On the 21st day, Li Xun, an original Doctor of the Book of Changes, was appointed as director at the Ministry of War, in charge of issuing decrees and edicts, and also holding the position of a scholar on duty at the Hanlin Academy.