光阴似箭 (guāng yīn sì jiàn) | Meaning: time flies like an arrow (idiom); How time flies! | Chinese Idiom with Pinyin & Origin

the sun and moon like a shuttle (idiom); How time flies!日月如梭rì yuè rú suō

a white steed flits past a crack (idiom); How time flies!白驹过隙bái jū guò xì

transient · fleeting稍纵即逝shāo zòng jí shì

with the passage · as summer goes and winter comes寒来暑往hán lái shǔ wǎng

time flies like an arrow (idiom); How time flies!