What Is the Experience of Summoning Demons in the World of Cultivation?

[Fantasy+summoning+demon+sinister killing+invincible, nonsensical] He was originally a sect genius, but he was attacked by surprise, his cultivation was revoked, and then he activated the opportunity to summon demons one night. "You desire to become stronger, then sign a contract with me and sell you to me." "What, sell it to you?" After that, he recovered his cultivation and rose up all the way. The Supreme Immortal Emperor was beaten to death by a punch and crushed by my demonic palm. Chainsaw Demons, Dark Demons, Cthulhu Demons, listen to my orders and slaughter these dog-like Nine-Five Supremes. The supreme beast of the Nine Heavens Mysterious Bird is not even qualified to fill a gap in my demon's teeth. Don't say you're pretentious, I'm more pretentious than you.