《旧唐书·列传·卷八十三》
李晟因李怀光反叛迹象已经明显，应有应急准备，通往蜀地、汉中的道路，不能堵塞，请求派部将赵光铣任洋州刺史、唐良臣任利州刺史、李晟女婿张任剑州刺史，各率兵五百防患于未然。
晟以怀光反状已明，缓急宜有所备。蜀、汉之路，不可壅也，请以裨将赵光铣为洋州刺史，唐良臣为利州刺史，晟子婿张彧为剑州刺史，各将兵五百以防未然。
Li Sheng knew Li Huaiguang showed signs of rebellion and he should have emergency preparations. He requested to send Zhao Guangxi, a general of the Ministry, to be the governor of Yangzhou, Tang Liangchen, to be the governor of Lizhou, and Li Sheng's son-in-law Zhang Ren to be the governor of Jianzhou, each leading five hundred soldiers to prevent unforeseen circumstances.