I recommend the two books,"The Fifth Yaoguang" and "The Little Imperial Post Soldier", to you. They are respectively the Ancient Romance-Classic Aerial and the Ancient Romance-Classic Aerial. Both books satisfied the plot that the female protagonist was a princess and the male protagonist was a hostage sent by another dynasty. "The Fifth Yaoguang" told the story of a love story between a hostage of the country and a princess of the previous dynasty, who was burdened with heavy responsibilities and placed interests above all else, while "The Imperial Gifted Little Post Soldier" told the story of the fierce dispute between the female post soldier and the various forces in the Pingshan Post Station, an important town on the border of the Western Yan Kingdom. I hope you like this fairy's recommendation. Muah ~😗