Please give me the title, thank you!

Please give me the title, thank you! There were three male protagonists in the novel. One of them was the prince who had turned white (the female protagonist said to him that he looked very good when she went to pick her up), one was a killer, and the other was the emperor (who fell in love with her first). At the end of the novel, the female protagonist married three men and went to the bridal chamber. In the end, the female protagonist ran away and the three men chased after her.