《资治通鉴·唐纪·唐纪二十三》
武则天询问原因，魏元忠回答说： 张昌期还很年轻，不熟悉治理之道。以前他在岐州任官时，岐州户口逃亡严重，所剩无几。
太后问其故，元忠曰： 昌期少年，不闲吏事，向在岐州，户口逃亡且尽。
Empress Wu asked why, and Wei Yuanzhong replied, “Zhang Changqi is still young and unfamiliar with the way to rule. In the past, when he was in office in Qizhou, the number of households in Qizhou declined drastically, to the point where there were practically none left.”