要害 yàohài HSK7 key point Origin Definitions Defs Strokes Stroke Words Sentences Sents 切中要害 qièzhòngyàohài hit the nail on the head to accurately identify the core of a problem or the essence of a situation in an argument or analysis正中要害 zhèngzhòngyàohài incisive to hit the nail on the head; to strike a vital blow