快刀斬亂麻 [ㄎㄨㄞˋ ㄉㄠ ㄓㄢˇ ㄌㄨㄢˋ ㄇㄚˊ; kuai4 dao1 zhan3 luan4 ma2] lit. quick sword cuts through tangled hemp (idiom); decisive action in a complex situation cutting the Gordian knot ◄ ►