《孙膑兵法·十问》
孙膑说： 抗击这样的敌军，使集中的敌军分散，一接触就假装败逃，然后伺机从后面攻击敌军，但要注意不让敌军事先察觉。这就是攻破敌军方阵的办法。 
曰：击此者，□阵而□之，规而离之，合而佯北，杀将其后，勿令知之。此击方之道也。
Sun Bin said: to resist such an enemy army, disperse the concentrated enemy troops, pretend to flee as soon as they come into contact, and then wait for a chance to attack the enemy army from behind, but be careful not to let the enemy notice it in advance. This is the way to break through the enemy's square formation.