《资治通鉴·唐纪·唐纪三十三》
河南节度使张介然到陈留才几天，安禄山即率叛军来到，张介然命令士兵登城守卫，士兵惊恐，不能作战。
张介然至陈留才数日，禄山至，授兵乘城。众忷惧，不能守。
Zhang Jieren, the governor of Henan, arrived in Chenliu just a few days before An Lushan led the rebel army to arrive. Zhang Jieren ordered the soldiers to climb the city walls to defend the city. However, the soldiers were terrified and could not fight.