《百战奇略·第五卷·安战》
凡是敌人从远道而来且士气锐盛，是以采取速战速决为有利；对于这种进攻之敌，我军应当凭恃深沟高垒，实施固守防御而不急于出兵应战，以等待敌人疲惫不堪之隙。
凡敌人远来气锐，利于速战；我深沟高垒，安守勿应，以待其敝。
Whenever the enemy comes from afar and is in high spirits, it is beneficial to adopt a "quick-fight, quick-decision" approach; against such an attacking enemy, our army should rely on deep moats and high fortifications, implement a solid defense and not rush to sortie into battle, in order to wait for the time when the enemy grows weary and exhausted.