管他三七二十一 [－－－－－－－]

Jyutping gun2 taa1 saam1 cat1 ji6 sap6 jat1
Pinyin guǎn tā sān qī èr shí yī

Definitions (CC-CEDICT)
  1. who cares
  2. no matter what
  3. regardless of the consequences
Definitions (Wiktionary)
  1. phrase, idiomatic
    don't care how; who cares how
    (syn.) 不管三七二十一