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Jyutping jap6 sam1 jap6 fai3
Pinyin rù xīn rù fèi

Definitions (CC-CANTO)
  1. into one's heart and soul; to great depth; (freezing cold) down to the bones [written and colloquial]
Definitions (粵典–words.hk)
  1. 副詞
    深深​噉​感受​一樣​嘢
    to feel deeply (e.g. of pain); to take something to heart; literally: to enter heart and to enter lung
    • 痛到入心入肺
      痛到入心入肺
      tung3 dou3 jap6 sam1 jap6 fai3
      of a great pain
Definitions (Wiktionary)
  1. phrase, Cantonese, idiomatic
    to feel deeply
Examples (粵典–words.hk)
  1. Cantonese
    痛到入心入肺
    痛到入心入肺
    tung3 dou3 jap6 sam1 jap6 fai3
    • of a great pain