《宋史·列传·卷八十三》
一个多月后，幽州方面派人来质询这件事，李允则回答说没有发生这件事。
逾月，幽州以其事来诘，答以无有。
More than a month later, people from the Youzhou area came to inquire about the incident, and Li Yuncheng replied that it had not happened.