幹嘛

干嘛
gànmá
  1. what are you doing?
  2. whatever for?
  3. why on earth?

CEDICT

Entry Composition

1 幹 gàn
  1. tree trunk
  2. main part of sth
  3. to manage
  4. to work
  5. to do
  6. capable
  7. cadre
  8. to kill (slang)
  9. to fuck (vulgar)
  10. (coll.) pissed off
  11. annoyed
=2 嘛 má
  1. used in 唵嘛呢叭咪吽 ǎnmáníbāmīhōng
  2. (Tw) (coll.) what?
=2 嘛 ma
  1. modal particle indicating that sth is obvious
  2. particle indicating a pause for emphasis