無毒不丈夫 [ㄨˊ ㄉㄨˊ ㄅㄨˋ ㄓㄤˋ ˙ㄈㄨ; wu2 du2 bu4 zhang4 fu5] no poison, no great man (idiom); A great man has to be ruthless. ◄ ►