I recommend Prince on the Bar Mask: Beast Concubine Difficult to Train. The female protagonist was cold and ruthless. She had powerful abilities and a system. She also made deals with the Crown Prince and lived a carefree life. However, one day, Prince had too many scumbags under him, and the female protagonist felt that she needed to improve. As a result, a series of interesting things happened. I hope you like this fairy's recommendation. Muah ~😗