The background of the story is ancient times; the main characters of the story are a man and a woman; the plot of the story is as follows: a lovely man was deceived by a bad woman, a lovely woman was married by a bad man, and the two lovely people entered the same cave, and then they played together in the world.
The man said I used to love her, but now I like you. So the woman falls in love with the man. So they were together.
Additionally:
In fact, I still haven't understood the true meaning of "Mary Sue". I'm sure this article won't be a Mary Sue, but I'm not sure if everyone thinks so, because I am indeed creating a strong, lovely and pitiful heroine. So, anyway, I'm the first to say ugly things. If you don't like it, don't come in. If you come in by mistake, don't scold me.