On the Brink of Death, I Was Granted an Immortal Fate by a Saintess

An eighty-year-old man has an absurd encounter with a Holy Maiden. From then on, he embarks on the path of cultivation. An ancestral Immortalization Furnace gives him an infinite lifespan and lets him master spells, talismans, artifact crafting, alchemy, and even profound, difficult cultivation techniques and moves at a glance. Countless female cultivators, fairies, demonesses, and Holy Maidens flock to him, seeking advice from this worldly old master and begging for his guidance. Old man: "I'm really just a little Qi Refining cultivator. Could you all stop being so enthusiastic?" Immortals seized the creations of heaven and earth and refined the origin of all things, until at last the Great Dao collapsed and all the heavens fell. The will of the Heavenly Dao forged every planet into the walls of a furnace and melted countless suns into its flames. It was called the Immortalization Furnace. One furnace burned every immortal in the heavens. Ten thousand years of immortal ways turned to ash in a single blaze. The origin returned to chaos, and the universe was born anew. In the new era, the immortal path flourished once more! An ordinary old man, frustrated by a lifetime of hardship, accidentally refined a rusty, battered furnace. And so... One man and one sword set foot on the path to immortality. One furnace and one flame buried all the immortals. So what if you're an Immortal Emperor? In the furnace's flames, you're no more than a heap of ash from tribulation. And what of a saint? Once the furnace opens, no matter how imperishable you've been for ten thousand years, you'll become a wisp of smoke. Want eternal life? Then beg him for it!