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Jyutping ke4 ngau4 wan2 maa5
Pinyin qí niú wèn mǎ

Definitions (Wiktionary)
  1. phrase, Cantonese, figuratively, idiomatic
    to settle for what one has for the moment (e.g. job, girlfriend, etc.) while actively looking for something better
    (syn.) 骑驴找马, 騎驢找馬
Definitions (Kaifangcidian)
  1. 騎驢找馬 – 骑驴找马

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Jyutping ke4 ngau4 wan2 maa5
Pinyin qí niú wěn mǎ

Definitions (CC-CANTO)
  1. (phrase) to buy time for something, e.g. a job, while waiting for a better opportunity to come along (literally "to ride an ox looking for a horse")