大功告成

大功告成 [dà gōng gào chéng]

1. ■ (of a project, work, etc.) be accomplished; be crowned with success; be brought to successful completion; ring the bell; end in a satisfactory way; finish nicely; The task is accomplished.; The great task has been completed.; One's purpose has been achieved.; the achievement of a great meritorious service; have achieved a great success:

水坝已大功告成。 The dam is accomplished.