Yes, I've heard of this book before. It's called 'The Rebirth of the Emperor's Daughter, I Wish You a Golden Year.' The female protagonist, Gu Qinghuan, became extremely smart after her rebirth. In the face of the misfortunes and mistakes of her previous life, she decided to start over. She had a twin brother, Bai Li, who was pursued by two men at the same time. This book is a classical fictional novel. If you like the theme of transmigration and rebirth, you can give it a try. I hope you like my recommendation. Muah ~