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批    亢    捣    虚    批：用手击；亢：咽喉，比喻要害；捣：攻击；虚：空虚。比喻抓住敌人的要害乘虚而入。

批：用手击；亢：咽喉，比喻要害；捣：攻击；虚：空虚。比喻抓住敌人的要害乘虚而入。

Attack the enemy at his weak points

批风抹月    批逆龙鳞    批毛求疵    批郤导窾    批亢抵巇