Could you recommend a few plots of evil cultivation techniques from fantasy novels?

I recommend the two books, Evil Saint of the Nine Realms and Poison Emperor of Hundred Refinements. Both of them are about the cultivation of evil techniques. After the protagonist of "Evil Saint of the Nine Realms", Li Shenrui, was killed, he used the inheritance of the Evil Dominator to practice the first evil technique and became the Evil Saint who swept the world. The main character of the Hundred Refined Poison Emperor also possessed an ancient evil technique and became a god-grade spirit speaker that everyone in the Immortal Spirit World revered. Both books were very suitable for readers who liked fantasy cultivation. I hope you like this fairy's recommendation. Muah ~😗