往事已矣

the past is dead (idiom)

to go (in a direction) / to / towards / (of a train) bound for / past / previous

old variant of 往[wang3]

past events / former happenings

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

already / to stop / then / afterwards

classical final particle, similar to modern 了[le5]