《周书·列传·卷十九》
齐军追赶，到了洛水北岸杨忠对将士说： 衹管吃饱饭，现在处于死地，贼军必定不敢渡河阻挡我们的先头部队。 齐军假装要渡河，杨忠赶马准备迎击，齐军不敢进逼，北周军队于是慢慢退兵回去。
齐众来追，至于洛北。忠谓将士曰： 但饱食，今在死地，贼必不敢渡水当吾锋。 齐兵阳若渡水，忠驰将击之，齐兵不敢逼，遂徐引而还。
The Qi army gave chase, and when they arrived at the northern bank of Luoshui, Yang Zhong said to his soldiers and officers: Just eat your fill, now that we have reached a point of desperation, the enemy army will definitely not dare to cross the river and block our advance. The Qi army feigned an attempt to cross the river, Yang Zhong mounted his horse and prepared to meet the attack, but the Qi army did not dare to advance, so the Northern Zhou army slowly retreated.