There is a beautiful novel about Prince Xiaoyao who was ordered by the emperor to marry a man as the princess. The man lived in the mountains since childhood.

This type of novel was called time-travel + prince + princess. The theme usually involved time-travel, time-travel to another world, or the story of an ancient dynasty. The protagonist was usually a prince or emperor who was ordered to marry a man as a princess. Men would usually travel to ancient times for some reason and have emotional entanglements with their princes, gradually adapting to ancient life. Such novels usually involved palace politics, power struggles, concubines 'struggles, family disputes, and other elements. Sometimes, they also involved the description of love. In novels, the protagonists would usually experience many difficulties and challenges but eventually overcome them and stay with their loved ones.