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Jyutping zan1 sing3 cing4
Pinyin zhēn xìng qíng

Definitions (Wiktionary)
  1. adj
    spontaneous (in emotions); natural and genuine; unaffected
Examples (粵典–words.hk)
  1. Cantonese
    喊就喊,笑就笑,呢啲咪叫真性情啰。
    喊就喊,笑就笑,呢啲咪叫真性情囉。
    haam3 zau6 haam3, siu3 zau6 siu3, nei1 di1 mai6 giu3 zan1 sing3 cing4 lo1.
    • Express all the emotion, that is really "the real you".