齊大非偶 [齐－－－]

Jyutping cai4 daai6 fei1 ngau5
Pinyin qí dà fēi ǒu

Definitions (CC-CEDICT)
  1. too rich to be a good match (in marriage) (idiom)
Definitions (Wiktionary)
  1. phrase, idiomatic, of someone from a humble background
    to decline a marriage proposal from a rich family as one dare not aspire to such an honour