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Jyutping lou5 pong5 saang1 zyu1
Pinyin lǎo bàng shēng zhū

Definitions (CC-CEDICT)
  1. lit. an old oyster producing a pearl (idiom)
  2. fig. birthing a son at an advanced age
Definitions (粵典–words.hk)
  1. 語句
    高齡​女性​懷孕​生子
    old woman giving birth to a child; literally: old clam creating pearl
Examples (粵典–words.hk)
  1. Cantonese
    老蚌生珠
    老蚌生珠
    lou5 pong5 saang1 zyu1
    • old clam birthing a pearl