"The Rebirth of the Phoenix: The Demon Emperor's Favorite Concubine" was a fantasy romance novel. The female protagonist was the ace agent, Ling Wuyue. She transmigrated to become the Ling family's useless fifth daughter and married the arrogant and narcissistic husband of the Demon Emperor. Unknowingly, she was doted on by him to the skies. I hope you like this fairy's recommendation. Muah ~😗