I recommend the book, Crazy Concubine Killer Trains the Evil Husband, to you. The female protagonist was transported to an ancient woman's body due to her failed mission. However, she had extremely high intelligence and scheming, and she also had the identity of an assassin. She had a battle of wits and courage with the male lead, making the male lead love and hate her. The story was exciting and exciting. I hope you like this fairy's recommendation. Muah ~😗