refute sb. with his own way, turn sb.'s battery against himself

yǐ zi zhī máo gōng zi zhī dùn ㄧˇ ㄗ˙ ㄓ ㄇㄠˊ ㄍㄨㄥ ㄗ˙ ㄓ ㄉㄨㄣˋ