Eat raw herbs, use your body as a cauldron, and use no flames or alchemy furnaces to refine elixirs within your body. You can improve your realm while refining elixirs.
He was originally a genius swordsman who traveled to another world when his life and death were in danger. He had a divine bloodline, but was excluded by the rules of the plane and could not practice.
Relying on the unparalleled swordsmanship in the previous life and the skills obtained through hard work, he started a legend in his new life.
