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Jyutping jin4 zi1 jau5 geoi3
Pinyin yán zhī yǒu jù

Definitions (CC-CANTO)
  1. Well grounded; to speak on good grounds; arguments based on facts
Definitions (Wiktionary)
  1. phrase, idiomatic
    to speak on good grounds; with one's arguments well-founded
    (syn.) 言之成理, 言之有理
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)