"Thank you, Elder."
Lu Changsheng immediately took the book to the quiet cultivation chamber.
Inside the quiet chamber, Lu Changsheng slowly opened the book.
This book seemed to be authored by a martial artist named "Ancient Abyss."
Being stored in the Transmission Hall, it must belong to a predecessor from the Heavenly Sect of the Ancient Domain.
The book offered a high-level understanding and explanation of the body refinement layer, Divine Power Realm, and Divine Astral Realm.
These three realms appear to be vastly different.
But "Ancient Abyss" explained that these three realms are fundamentally the same, all cultivating the "essence" of the human body.
The human body is divided into "essence, vitality, and spirit."
Body refinement, Divine Power, and Divine Astral cultivate the essence of the human body.
That is to say, the physical body.
Blood and vitality, muscles, bones, skin, and so on, all belong to the "essence" within essence, vitality, and spirit.
