😋I recommend you the ancient romance novel, Noble Marquis. The female protagonist traveled to the Song Dynasty in a parallel time and space and swapped identities with her autistic twin brother. The female protagonist disguised herself as a man to learn for her brother, enter the official career, and enjoy life. Later on, the female lead became the only concubine of Wang, who had a foreign surname, in the bloodthirsty and illustrious Loftiness Kingdom. She assisted her younger brother in ruling the country and revitalizing the Celestial Dynasty. I hope you like my recommendation, Mwah ~😗