老蚌生珠
lǎo​bàng​shēng​zhū

having a child in old age

老蚌生珠 lǎo​bàng​shēng​zhū
having a child in old age
(idiom) literally an old oyster producing a pearl; describes having a child (traditionally a son) at an advanced age, or originally, a talented son born to a talented father
advanced age pregnancy
(humorous) to give birth at an advanced age; late pregnancy

Frequency
Written text
0.006 per million

Sources
Frequency data
BCC Corpus (BLCU)