撒手不管

sāshǒubùguǎn
  1. to stand aside and do nothing (idiom)
  2. to take no part in

CEDICT

Entry Composition

1 撒手 sāshǒu
  1. to let go of sth
  2. to give up
2 不管 bùguǎn
  1. not to be concerned
  2. regardless of
  3. no matter