[斩钉截铁 / 斬釘截鐵, zhǎn dīng jié tiě, ㄓㄢˇ ㄉㄧㄥ ㄐㄧㄝˊ ㄊㄧㄝˇ]to chop the nail and slice iron(成语 saw);resolute and decisive; unhesitating; definitely; without any doubt#30984[Add to Longdo]
[斩草除根 / 斬草除根, zhǎn cǎo chú gēn, ㄓㄢˇ ㄘㄠˇ ㄔㄨˊ ㄍㄣ]to cut weeds and eliminate the roots (成语 saw); to destroy root and branch; to eliminate completely#66586[Add to Longdo]