- 光阴似箭 guāngyīnsìjiàn time fliestime flies like an arrow; how time flies
- 光阴荏苒 guāngyīnrěnrǎn time flies(idiom) Time flies; the passage of time.
- 一寸光阴一寸金 yīcùnguāngyīnyīcùnjīn precious time(saying) time is precious
- 寸金难买寸光阴 cùnjīnnánmǎicùnguāngyīn time's valueAn ounce of gold cannot buy an inch of time; money cannot buy back lost time, emphasizing that time is precious.
- 一寸光阴一寸金，寸金难买寸光阴 yīcùnguāngyīnyīcùnjīn, cùnjīnnánmǎicùnguāngyīn time is preciousan interval of time is worth an ounce of gold and money cannot buy it back; used to emphasize that time is invaluable
- 虚度光阴 xūdùguāngyīn waste timeto waste time on worthless activities
