《三十六计·攻战计·调虎离山》
在战场上，等到自然条件对敌人不利时再出击，用人为的假象去诱惑敌人。主动进攻有危险，诱敌来攻则有利。
待天以困之，用人以诱之，往蹇来返。
On the battlefield, wait until the natural conditions are unfavorable to the enemy before launching an attack, and use artificial illusions to lure the enemy. It is dangerous to take the initiative to attack, but it is beneficial to lure the enemy to attack.