Meanings
- lit. use sb's spear to attack his shield (idiom, derived from Han Feizi 韓非子|韩非子); turning a weapon against its owner
- fig. to attack an opponent using his own devices
- hoist with his own petard
以子之矛，攻子之盾
ji5 zi2 zi1 maau4 ，gung1 zi2 zi1 teon5
lit. use sb's spear to attack his shield (idiom, derived from Han Feizi 韓非子|韩非子); turning a weapon against its owner · fig. to attack an opponent using his own devices · hoist with his own petard