成语故事-亡羊补牢，犹未晚也

It is not too late to make up for the dead sheep: the metaphor of things going wrong, in time to find a way to remedy.

Once upon a time, a man inherited twenty sheep from his uncle, but he refused to perfect the fence that had been built out of laziness.

When the twenty sheep gradually disappeared and only 17 remained, he suddenly realized that he had finally repaired the fence under the persuasion of his wife and neighbors and corrected the mistake in time.

This is the story of the sheep who have made up for it, and it is not too late.