《元史·本纪·卷一》
逼近中兴府，引黄河水灌城。堤防决口，河水向外奔泄，便撤去包围而回。
薄中兴府，引河水灌之，堤决，水外溃，遂撤围还。
Approaching Zhongxing Mansion, the Yellow River was used to flood the city. The embankment broke down, the river water rushed out, so the siege was lifted and the troops withdrew.