What happens when it happens
It is a Chinese idiom, Pinyin is Z ā OJ ì sh í Hu ì, which means when you meet a chance. From Chen kuilong's miscellany of Mengjiao Pavilion.
The origin of Idioms
Chen kuilong's miscellany of mengjiaoting (Volume 1): "later, when I met, I was promoted to Jingyin."
Analysis of Idioms
It's a meeting, a meeting, a meeting
[antonym]: misfortune does not match
Idiom usage
To act as a predicate or attributive
What happens when it happens