不咎既往

not censure sb for his past misdeeds / overlook sb's past mistakes / let bygones be bygones

no; not so / (bound form) not; un-

fault / to blame / to punish / calamity / misfortune

already / since / both... (and...)

past / bygone / the past

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

old variant of 往[wang3]