三七二十一

sānqīèrshíyī
  1. three sevens are twenty-one (idiom)
  2. the facts of the matter
  3. the actual situation

CEDICT

  1. (figurative) (to not care about) the actual situation; facts of the matter
  2. (to not care about) the actual situation; facts of the matter

Wiktionary

本为算学乘法的口诀，借比喻为不顾一切。

重編國語辭典

Entry Composition

1 三七 sānqī pseudoginseng (Panax pseudoginseng), hemostatic herb
2 二十一 èrshíyī twenty-one; 21

Containing this entry

不管三七二十一 bùguǎnsānqīèrshíyī
  1. regardless of the consequences
  2. recklessly relying on a hopelessly optimistic forecast
管他三七二十一 guǎntāsānqīèrshíyī
  1. who cares
  2. no matter what
  3. regardless of the consequences