I Became an Immortal Emperor for the Ages by Refining Medicine Dregs

[Hilarious alchemy + ordinary protagonist + decisive and ruthless] His soul transmigrates into a cultivation world, where a celestial maiden breaks off their engagement and brands him a once-in-a-century good-for-nothing. But Lu Chen awakens a mysterious ancient cauldron. The medicinal dregs other people throw away become supreme spirit medicine in his hands! A peerless grinder is born: “You temper your bodies with plain water. I soak in top-grade spirit liquid!” “You carefully refine your pills. I just purify medicinal dregs!” Years later, the celestial maiden kneels in regret, begging him to take her back, while the Immortal Emperor cries out that he's invincible. Standing above the firmament, Lu Chen smiles calmly. “I should thank you for looking down on me back then, and for all that unwanted medicinal dregs.”