Upon waking up, Zhou Yi finds himself reincarnated as a jailer in the Heavenly Prison. Fortunately, he has awakened the Dao Fruit of Eternal Life, but possesses no means of protecting himself! In a cultivation world plagued by demons and monsters, where ghosts and supernatural beings roam freely and danger lurks everywhere, Zhou Yi decides to hide away and cultivate for hundreds, thousands, or even tens of thousands of years! The world changes, and time flows on. A child he released a hundred years ago becomes the founding sage ancestor of the Great Qian Dynasty. A young man he guided a thousand years ago becomes the Supreme Grand Elder of an immortal sect. A pet he raised ten thousand years ago transforms into an unrivaled demon king from another realm. This is the story of an immortal mortal who watches the world transform, witnesses the rise and fall of countless eras, and ultimately becomes an Immortal Venerable of Eternal Life!