《新唐书·列传·卷一百三十三》
暗中教一些口音同于贼人的士兵换上贼兵的衣服，夜里入长安袭击贼营，贼人大惊。
阴教士卒变衣服、言语与贼类者，夜入长安攻贼营，贼大惧。
Secretly taught some soldiers with the same accent as the rebels to change into the clothes of the rebel soldiers and enter Chang'an at night to attack the rebel camp. The rebels were shocked.