I'm Losing It, Who Let This Trickster Cultivate?

[Funny + unorthodox cultivation + having fun is all that matters + schemer + making people lose their cool] The world of cultivation is full of thrills! But you can't get through it without taking a few hits! In this world of cultivation, where the strong prey on the weak, He Xiaobai, who had transmigrated here, trembled with fear. Fortunately, he awakened the Grudge System. By earning resentment from others, he could improve his cultivation and unlock mysterious items. For eternal life, for invincibility, He Xiaobai had no choice but to “grieve deeply” as he set his sights on his fellow disciples. Mysterious Item [Book of All Worlds]: Learn the most embarrassing secret a person has from this book. He Xiaobai: “Sect Master, I know... you could spare some spirit stones~” The Sect Master's body jolted as if struck by lightning. Mysterious Item [Sunglasses That Make Anyone You Stare At Get Pregnant] The fellow cultivators began fighting fiercely. He Xiaobai put on the sunglasses. “Please, you two, stop fighting!” Then, as two exceptionally gifted prodigies clashed with fierce pride, they looked at their huge bellies and sank into despair. Mysterious Item [Li Jing's Sword]: Guarantees that the opponent will catch the blade with their bare hands. That day, the Immortal King of Destruction awoke, vowing to annihilate the world. But as he delivered his threats, for some reason he dropped to his knees before everyone, pressed his hands together, and froze in place. While the great cultivators of the world were losing their cool, He Xiaobai had become invincible. When the apocalypse came, nobody expected a schemer like him to be the one who stepped in at the end. At the peak of the world, He Xiaobai pinched his little fingers together. “Turns out, I'm the one who can handle this~” Also known as: I Became an Immortal by Being a Pain; I'm Invincible, So Why Are You All Losing Your Cool?! (The protagonist is a schemer who causes trouble. If that's not your thing, don't read.)