《南齐书·列传·卷五十七》
等到寿春摧毁，朐山不能攻下，魏君主出行到定州，大举修理道路，扬言要向南行动，但不敢前进。
及寿春摧败，朐山不拔，虏主出定州，大治道路。声欲南行，不敢进。
By the time Shouchun was destroyed and Qushan could not be attacked, the Wei monarch went to Dingzhou, had the roads extensively repaired, and threatened to advance south, but did not dare to do so.