Correct
白驹过隙
/ bái jū guò xì /
Strokes
Definition
a white steed flits past a crack (idiom); How time flies!
Example
Definition
a glimpse of a white colt flashing past the crack in a wall—in the twinkling of eye
1
Rénshēng
人生
rú
如
báijūguòxì
白驹过隙
。
Life is fleeting.