The Lesser Three Realms are divided into the Qi Refining Stage, Acupoint Opening Stage, and Foundation Establishment Realm.
In ancient times, humans were born with innate bodies. They needed no cultivation before embarking directly upon the path of immortality; the laws and principles of heaven and earth lay within reach, and there was no notion of the Lesser Three Realms.
Because of the Demon Race's curse, the five elements became obscure, qi channels clogged, and people could no longer directly touch the laws and principles of heaven and earth. Only then did they open another path: entering the Dao through martial arts in the Lesser Three Realms, returning to the innate after going against it.
Thus, upon reaching the Innate Realm, an ordinary mortal body would inevitably undergo a transformation.
With an innate Dao body, cultivators could perceive and comprehend the laws and principles of heaven and earth, stepping through the true gate of immortality.
The Innate Realm was a watershed—cross it, and one cultivated immortality; fail to cross it, and one merely cultivated!
Upon reaching Spirit Transformation, true qi transformed into true essence, and the fleshly body underwent another transformation, gaining a certain ability to repair and reshape itself. Here, Spirit Transformation referred to the body shedding its mortal frame and remaking its bones: severed limbs regrowing, as though one had become divine.
As for Spirit Transformation-exclusive divine abilities such as refining magical treasures or shifting through space, different worlds had different versions. Not every Spirit Transformation cultivator possessed such privileges.
Upon advancing further to the Nether Passage Realm, the body's transformation was merely incidental. The true focus was the heaven-and-earth overturning change of the Primordial Spirit.
So-called Nether Passage meant that a spark of true spirit remained undying; the Primordial Spirit emerged from the hidden and entered the