十年九不遇

shíniánjiǔbùyù ㄕˊ ㄋㄧㄢˊ ㄐㄧㄡˇ ㄅㄨˋ ㄩˋ

    • very rarely encountered
    • something that almost never happens

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
nine years in ten you don't meet it
Meaning
Very rarely encountered; something that almost never happens.

Sources