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Jyutping oi3 fai1
Pinyin ài hún

Definitions (Wiktionary)
  1. name
    (historical) Aigun (a former county of Heilongjiang, China)
  2. name
    Aigun (a town in Aihui district, Heihe, Heilongjiang, China)

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Jyutping oi3 fai1
Pinyin ài huī

Definitions (Wiktionary)
  1. name
    (historical) Aigun (a former county of Heilongjiang, China)
  2. name
    Aigun (a town in Aihui district, Heihe, Heilongjiang, China)

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Jyutping ngoi3 wan4
Pinyin ài huī

Definitions (CC-CANTO)
  1. Aigun, a historical Chinese town