The female protagonist of the rebirth novel disguised herself as a man when she was alive and was called Xu Ziyan when she was reborn. The female protagonist fought for the emperor when she was alive. The emperor didn't know that the female protagonist was the person she liked. After rebirth, the female protagonist and the emperor were together, but the female protagonist didn't know that the emperor was actually the person she liked. This was a classic novel about rebirth. The plot usually involved rebirth, cross-dressing, war, feelings, and many other aspects. In the novel, the female protagonist, Xu Ziyan, chose to disguise herself as a man before she was reborn for the sake of the country and the emperor to participate in the war. She performed well in the war and became an outstanding general, winning many victories for the country and the emperor. After her rebirth, Xu Ziyan and the Emperor met and gradually developed feelings for each other. However, Xu Ziyan did not know that the Emperor was actually the person she liked. It was only after a misunderstanding that she realized that she had always loved the Emperor. In the following days, Xu Ziyan gradually understood the true identity of the Emperor and spent many wonderful times with him. In the end, Xu Ziyan and the Emperor came together to protect the country and the people.