The myth of the earthly mortal

He was transported through a dimensional portal to another world, which he thought had a bright future ahead of him; He will reach the top of this world and get wealth and power. But what was waiting for him was a harsh hell of mortal life. He couldn't cultivate like the rest of his peers, and he couldn't even learn ordinary martial arts because of his emaciated body, until one day he decided to end his life. But he suddenly stopped at the last moment.. He said some words that have been sung by generations for countless years. Many immortal sects have made them the foundation of their inheritance. All the great empires in the immortal world put these words as the basis of their teachings when they pass the throne from one emperor to another. Agriculture only after they understand these words.. to create a new myth - the myth of the earthly mortal!!