After Being in Seclusion for 100,000 Years, I Was Dug up by the Devil's Saint

Qi Yan traveled across the Sumeru Continent and acquired the strongest physiques in the world. The most powerful cultivation body in the world, the Taihuang Holy Body! The most powerful alchemy body in the world, the Dragon Fire Jade Body! The most powerful formation body in the world, the Qiankun Tao Body! The most powerful weapon-refining body in the world, the heavenly gold body! … He was supposed to be making great progress all the way, but he encountered a life and death crisis at the beginning, and the system activated the invincible retreat defense mechanism. This retreat lasts for one hundred thousand years! One hundred thousand years later, he will be invincible in the world! One hundred thousand years later, he was dug up by the Holy Girl of the Demon Sect, and by some strange combination of circumstances, he became the founder of the Demon Sect!