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Jyutping jat1 jat6 wai4 si1 , zung1 san1 wai4 fu6
Pinyin yī rì wéi shī , zhōng shēn wéi fù

Definitions (Wiktionary)
  1. proverb
    Even if someone is your teacher for only a day, you should regard him like your father for the rest of your life.

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Jyutping jat1 jat6 wai4 si1 , zung1 san1 wai4 fu6
Pinyin yī rì wéi shī , zhōng shēn wéi fù

Definitions (CC-CEDICT)
  1. lit. teacher for one day, father for ever (idiom)