《新唐书·列传·卷一百三十八》
从李正己以来，平卢虽表面听命天子，实质招降纳叛，有得罪了朝廷的人就一定厚礼招纳。
自正己以来，虽外奉王命，而啸引亡叛，有得罪于朝者厚纳之。
Since Li Zhengji, Pinglu has nominally obeyed the emperor, but in reality, he has recruited rebels and traitors, and anyone who offends the imperial court must be generously accepted.