切中要害 [ㄑㄧㄝˋ ㄓㄨㄥˋ ㄧㄠˋ ㄏㄞˋ; qie4 zhong4 yao4 hai4] to hit the target and do real damage (idiom) fig. to hit where it hurts fig. to hit home an argument that hits the nail on the head ◄ ►