《资治通鉴·魏纪·魏纪七》
两军营垒相互逼近，两军的阵势也已经相互明了，智慧勇敢得以施展，各种巧拙之计也得以运用，施展谋略能了解其得失，相互较量也能知道长短优劣，敌军情况的真伪，将向哪里藏匿？
夫屯垒相逼，形势已交，智勇得陈，巧拙得用，策之而知得失之计，角之而知有馀不足，虏之情伪，将焉所逃！
The camps of the two armies are approaching each other, and the formations of the two armies are already clear to each other. Wisdom and bravery can be displayed, various skillful and clumsy tactics can be used, the use of strategy can understand the gains and losses, and mutual competition can also know the strengths and weaknesses. The truth of the enemy's situation, where will it be hidden?