My Mortal Skills Are Immortal Powers

The Immortal Suppressing Sect faces annihilation after its leaders perish. Their last hope? Su Yin, the youngest \"Martial Uncle,\" who everyone thinks is a cultivation genius. In reality, he's a transmigrator who spent ten years in the forbidden area learning mundane skills like cooking and calligraphy, convinced he's a powerless mortal. Desperate, the Elders force him to \"pretend\" to be a Grandmaster to deter enemies. Su Yin agrees, terrified of exposure. But when he simply speaks of rain, the heavens respond with celestial phenomena. When an elder attempts to probe his \"non-existent\" cultivation, they vomit blood from an unseen backlash! Unbeknownst to him, his \"mortal skills\" are Sacred Arts from ancient Saints, and his \"powerless\" body is an evolving Immortal Physique. Can this oblivious \"mortal\" accidentally save a collapsing sect, or will his own overwhelming, misunderstood power be the sect's undoing?