This type of novel was generally called a time-travel romance novel. The female protagonist would usually travel to an unfamiliar era and possess modern knowledge and wisdom, as well as some unique skills and habits of the ancient times. The male protagonist was usually a prince or emperor, and the female protagonist's first contact and mentor in ancient life. The story usually revolved around the relationship between the two of them. The female protagonist might have misunderstandings or get along badly with the male protagonist because of her transmigrated identity. However, as time passed, the relationship between the two of them gradually warmed up. They might also experience some twists and turns and tests, but they would eventually come together. The ending would usually be a happy one where the two of them were together, or the female lead would help the male lead realize some of his dreams and goals while also solving some historical problems and contradictions. However, there were also some novels with tragic endings. The male lead was too sad and missed her, and the white-haired female lead came back with a new look. The two of them started over again.