I Can Turn into Evil

System + soft supernatural + martial arts + urban + single female protagonist. I traveled to a world that was completely different from reality, a world that really existed. [Ding Dong] [You have activated the system] [You can obtain the ability to be cunning at a certain price] [emm, it can be a leg or a hand, or...] [When you try your best to suppress Li Wei, but find that you have become Li Wei, please don't feel sad] ...