完事大吉 wánshìdàjí all set
(idiom) used to say that a matter is finished and one no longer needs to worry about it; often used after [[就|就|jiu4]] to mean the matter is settled once and for all. This is often used humorously and is distinct from [[万事大吉|萬事大吉|wan4 shi4 da4 ji2]]