心甘情愿 xīn gān qíng yuàn

DEFINITIONS

  1. delighted to (do sth, idiom)
  2. perfectly happy to do
  3. most willing to do

CHARACTERS

心 xīn heart; mind, intelligence; soul
甘 gān sweetness; sweet, tasty
情 qíng feeling, sentiment, emotion
愿 yuàn sincere, honest, virtuous