They Called Me Trash, I Am the Immortal King

Once a supreme Fairy King, Mu Yun was betrayed and murdered. Reborn into a bullied, illegitimate waste—a powerless 'mentor' ridiculed by his own students—he finds himself trapped in a humiliating body 10,000 years after his demise. But his past life's unparalleled knowledge remains! Dismissed as a fool, his casual corrections of ancient \"sages\" and forgotten alchemy insights effortlessly debunk this backward world's understanding of cultivation. With ancient wisdom his only weapon and a burning desire for vengeance, this resurrected king will not just rise; he will rewrite the very rules of reality. But are his old enemies truly gone, or has his rebirth merely opened a new, deadlier game?