Time flies
The Chinese idiom "d ò NGB ù sh ī sh í" refers to not doing things out of time.
Idiom explanation
The idiom is always on the move. Pinyin D ò NGB ù sh ī sh í. It's time to act. Don't do something out of date.
The origin of Idioms
It's from Huainanzi · human training written by Liu An of Han Dynasty: "the sage respects the small and is cautious, and never misses the opportunity."
Time flies
one 's methods are more than human - shén jī miào suàn
maintain principles with flexibility - shǒu jīng dá quán