哪管三七二十一

nǎguǎnsānqī'èrshíyī ㄋㄚˇ ㄍㄨㄢˇ ㄙㄢ ㄑㄧ ㄦˋ ㄕˊ ㄧ

    • to disregard the consequences or the rules
    • to do something recklessly come what may

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
who cares that three times seven is twenty-one
Meaning
Not caring about the consequences or the rules; doing something recklessly regardless. Usually written 不管三七二十一; like 'come what may' or 'damn the consequences'.

Sources