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Jyutping jin4 hong2 seon3 gwo2
Pinyin yán xíng xìn guǒ

Definitions (Wiktionary)
  1. phrase, idiomatic
    Synonym of 言必信,行必果 (yán bì xìn, xíng bì guǒ).
    (syn.) 言必信, 行必果