挖空心思 wā kōng xīn si

DEFINITIONS

  1. to dig for thoughts (idiom); to search everything for an answer
  2. to rack one's brains

CHARACTERS

挖 wā
HSK 6
dig, dig out, gouge out, scoop
空 kōng
HSK 3
empty, hollow, bare, deserted
心 xīn
HSK 3
heart; mind, intelligence; soul
思 si
HSK 2
think, consider, ponder; final particle