《明史·列传·卷二十一》
纳哈出的余部逃窜匿藏的还有数十万人，听说明军回朝，就在中途设下埋伏，图谋攻袭明军尾部。
纳哈出余众窜匿者尚数十万，闻帅旋，设伏于途，谋俟大军过窜取之。
Nahachu's remnants who had escaped and gone into hiding still numbered hundreds of thousands. When they heard that the Ming army was returning to the capital, they set up an ambush, intending to attack the rear of the Ming army.