《元史·本纪·卷三》
皇上允从。这时，蒙古军队四万，号称十万，分成三路进军：皇帝经由陇州进入散关，诸侯王莫哥经由洋州进入米仓关，万户孛里叉经由渔关进入沔州。
是时，军四万，号十万，分三道而进：帝由陇州入散关，诸王莫哥由洋州入米仓关，孛里义万户由渔关入沔州。
The emperor agreed. At this time, the Mongol army of 40,000, claimed to be 100,000, marched in three ways: the emperor entered the Sange Pass via Longzhou, the prince Mogo entered the Micang Pass via Yangzhou, and Wanhu Boli Cha entered the Mianzhou via Yuguan.