This Really Is the Human Emperor’s Banner

Su Ming transmigrated to a world of immortal cultivation and became an ordinary boy kept captive by a heretic cultivator. To protect himself, he combined a fragmentary method for crafting a soul-summoning banner with the technological ideas from his previous life, using his own skin, teeth, and other body parts to forge a unique “Human Emperor Banner.” The banner has no direct offensive power, but it can devour souls, ghosts, and evil spirits, then return special energy that heals injuries, strengthens the body, and improves one's innate potential. Most incredibly, that special energy can even strengthen other objects! “My Human Emperor Banner may look cool and give off black smoke, but it really is a Human Emperor Banner! Don't believe me? Go inside and see for yourselves!”