《明史·列传·卷三十六》
他曾多次跟随成祖北征，对守边将领贤明与否，边防要塞的险易远近，敌情的顺逆，都有了解。
数从成祖北征，能知边将贤否、厄塞险易远近、敌情顺逆。
He had accompanied Chengzu on his northern expeditions many times, and was thus well aware of the competence or incompetence of the generals guarding the borders, the difficulties and distances of the border fortresses, and the ups and downs of the enemy situation.