From a scholar to a villain, I was a good person at the beginning

[Mortals Cultivate Immortality] + [Villains] + [No Decline of IQ] + [Gradually Darkening] + [Decisive Killing] + [No Female Protagonist] + [No System, Non-Fun Story] + [Each Character Has a Rich Story]
Jiang Zheng, a scholar, has set foot on the path to immortality!
But due to his low talent, he had to sell his emotions to the strange voice in his mind in exchange for talent and cultivation.
So, a scholar walked out of the dust...Killing the proud, destroying the powerful, refining the demon flag...The sun and the moon are destroyed with his fists, and the mountains and rivers are broken with his feet!
What else can't a person without emotions do?
…
Jiang Zheng: "What is cultivation? It's a life-and-death struggle!"
"Let me ask you, there is only one spiritual stone here, who will take it? To put it bluntly, I must kill you!"
"In fact, at the beginning, I was also a good person! Don't be afraid, I am very powerful, killing people is just a matter of one blow!"
…
"Even if all seven emotions and six desires are gone, I still laugh at the Supreme Forgetting Emotions and Being Free"
"I know I regret, this is why I don't regret!"