A world shrouded in darkness where sinister cultivation practices offer perilous paths—transformers risk madness, physical corruption, or becoming sustenance for malevolent entities. Duan Yun's transmigration grants him an unexpected treasure: the supreme manual "True Explanation of the Jade Sword." Blessed with one-in-a-million talent, he unknowingly elevates the techniques to unprecedented heights, wielding the sword's guidance to penetrate all obstacles. Driven by conviction that enlightenment should serve humanity, Duan Yun openly shares his cultivation methods across the realm without reservation. The consequences prove... complicated. "Demon Duan corrupted me! His yin-yang technique left me squatting to urinate. This is unbearable!" "The 'Seven Parts Returning Qi' he taught destroyed my fortune. I'm cursed to die or wade through filth—a diviner confirmed I've lost seventy percent of my luck." "Never believe Demon Duan's teachings! The Myriad Wonders Palace's fairy ascended to heaven itself, yet one night she fell possessed and became a demoness. Old Demon Duan orchestrated her downfall!" Bewildered, Duan Yun cannot fathom the accusations. He merely practiced diligently, disseminated knowledge, and occasionally channeled natural laws. How did he earn such infamy? This is pure slander! The identical techniques present no complications for me, so clearly, the fault resides with all of you, not with me!