呕心沥血 ǒu xīn lì xuè

DEFINITIONS

  1. lit. to spit out one's heart and spill blood (idiom)
  2. to work one's heart out
  3. blood, sweat and tears

CHARACTERS

呕 ǒu
HSK 6
vomit; annoy, enrage
心 xīn
HSK 3
heart; mind, intelligence; soul
沥 lì trickle, drip; strain; dregs
血 xuè
HSK 5
blood; radical number 143