When power is introduced to people, they usually learn to use it first before they even try to sustain or even reproduce it. It makes sense that in an era where True Grandmist Energy was held in abundance, it would be taken for granted.
All cultivation methods, techniques, and battle skills created during the primordial era were made to make use of the True Grandmist Energy and never reproduce it.
When Leon thought of this point, it became more apparent that the [Hegemon of Primal Chaos] had a deeper origin compared to all these other heritage from the primordial era of gods and devils.
Exactly what was the origin of the Hegemon of Primal Chaos technique?
It was found in ancient ruin before it was circulated throughout the Divine Realm, but not a single Divine Practitioner could achieve success in this technique.
Yet, it was precisely this technique that can reproduce the very source of energy that gave birth to everything in existence.