修心養性 [－－养－]

Jyutping sau1 sam1 joeng5 sing3
Pinyin xiū xīn yǎng xìng

Definitions (CC-CEDICT)
  1. to cultivate the heart and nurture the character (idiom); to improve oneself by meditation
Definitions (粵典–words.hk)
  1. 動詞
    自我​反省​，​培養​品格
    to cultivate the heart and nurture the character