I recommend a novel to you. It's 'Rebirth of the Mountains and Rivers at the End of the Song Dynasty'. The protagonist was a prince who had traveled to the Song Dynasty. In order to protect his country, he devoted himself to the sorrowful war of defending the country and changed the direction of history. Although the main character was not trying to take back his territory, he fought for the honor and stability of his country. It was also worth reading. I hope you like this fairy's recommendation. Muah ~😗