《新唐书·列传·卷七十九》
当时京兆司录参军李敬仲从叛军中逃回，就安排他任节度府判官，任谏议大夫郑云逵为行军司马，提拔张为自己的副手。
时京兆司录参军李敬仲自贼中来，乃署节度府判官，以谏议大夫郑云逵为行军司马，擢张彧自副。
At that time, Li Jingzhong, the recording secretary of Jingzhao, escaped from the rebel army, and was then appointed as a judge of the Jiedu Government. Zheng Yunkui, an advisor, was appointed as a military advisor, and Zhang was promoted to be Li's deputy.