《旧唐书·本纪·卷十四》
在这之前，韩全义进京朝拜，让他的外甥杨惠琳主持留后事务，朝廷很快发出诏书任命李演为节度，接替韩全义。
先是韩全义入朝，令其甥杨惠琳知留后，俄有诏除李演为节度，代全义。
Prior to this, Han Quanyi went to the capital to pay respect to the emperor, and left Yang Huilin, his nephew, in charge of managing the positions of Jiedushi and Liushi. The imperial court soon issued an imperial edict to appoint Li Yan as the Jiedushi, succeeding Han Quanyi.