The Fire Dragon Returning Essence Scripture was a Cultivation Technique created by a senior Cultivator who was fortunate enough to witness a Fire Dragon's true form in the Immortal Garden.
That was a True Dragon from the Upper Realm, not something the motley Dragon Beasts in the Human World, which merely carried the bloodline of the Dragon Race, could compare to.
At the very least, they had to be Void Refining True Dragons to be called Immortal Beasts.
Therefore, the ultimate goal of the Fire Dragon Returning Essence Scripture was to transform one's body into a Fire Dragon, getting as close as possible in physical form to a True Dragon of the Upper Realm.
A true Fire Dragon spewed Pure Yang Celestial Fire, which was Supreme Yang and Firm. In the Human World, almost nothing could withstand its scorching heat.
