The cultivation of monks is actually a process of continuously enhancing one's essence, energy, and spirit, transforming quantitatively into qualitative changes, thereby elevating the origin of life and breaking through one level of existence after another, transforming oneself.
Among essence, energy, and spirit, essence refers to the physical body, energy refers to cultivation level, and spirit naturally refers to the Yuan spirit.
As stated by the Holy Maiden of Taoxu Road, Chu Yue Ling, in the ancient ages, long before many great eras, predecessors had divided the path of the physical body and the Yuan spirit into four realms each, to provide cultivators with a clearer vision of the path they were to face.
The nascent realm, Star-pointing Realm, Sun God Realm, and Unification Realm—these are the four stages of division for the Yuan spirit path.
At this moment, Gu Chen came back to his senses and asked, "If that's the case, what are the four realms of the physical body then?"