当天事当天毕

never put off until tomorrow what you can do today (idiom)

(onom.) dong / ding dong (bell)

to be / to act as / manage / withstand / when / during / ought / should / match equally / equal / same / obstruct / just at (a time or place) / on the spot / right / just at

at or in the very same... / suitable / adequate / fitting / proper / to replace / to regard as / to think / to pawn / (coll.) to fail (a student)

on that day

the same day

day / sky / heaven

matter / thing / item / work / affair / CL:件[jian4],樁|桩[zhuang1],回[hui2]

surname Bi

the whole of / to finish / to complete / complete / full / finished