as brief as the passing of a white colt glimpsed through a crack in the wall; as swiftly as a white charger seen through a crack in the door; flash by as the glint of a white horse across a chink in the door; in a split second ❍ 人生一世间，如～，何至自苦如此乎！(《史记·留侯世家》2048)Man’s life in this world is as brief as the passing of a white colt glimpsed through a crack in the wall. Why should you punish yourself like this?/人生如～，似此迁延岁月，何日恢复中原乎？(《三国演义》934) Life is short. Our days flash by as the glint of a white horse across a chink in the door. We are waiting and waiting. Are we never to try to restore Han to its old glory?
白驹过隙bai ju guo xi
a glimpse of a white colt flashing past a chink in a wall—time flies
白驹过隙
time flies 光阴似～。Time passes as quickly as a white pony flashing past a chink;Time flies;Life is short.
白驹过隙bái jū ɡuò xì
比喻时间过得飞快，如同骏马在极小的细缝前飞快越过一般。time flying, in a split second, the flight of time