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Jyutping bat1 gin3 ging1 cyun4
Pinyin bù jiàn jīng zhuàn

Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

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Jyutping bat1 gin3 ging1 zyun6
Pinyin bù jiàn jīng zhuàn

Definitions (CC-CEDICT)
  1. not found in the classics (idiom); unknown
  2. unfounded
  3. not authoritative
Definitions (Wiktionary)
  1. phrase, idiomatic
    to not be found in the classics