The scriptures of the eight Orthodox and Demonic Sects are most complete within the Ghost King Sect and the Pill Cauldron Sect.
The Ghost King Sect is renowned in the world for Ghost Cultivators and far surpasses other sects in exploring the Dao of Divine Soul.
The Art of Reincarnation is an extremely secret scripture of the Ghost King Sect, which would have been nearly impossible for outsiders to see if the sect hadn't been destroyed and the Dharma Decline hadn't arrived.
This technique places one in a deathly situation only to be reborn afterward, using secret techniques to tear the Divine Soul into pieces while ensuring the self does not get lost, forcibly integrating into the soul of a newborn infant and, with vast memories and Soul Power, rewriting and transforming it into a new soul.
"This involves the Dao of Samsara, and the soul is too mysterious; even a Nascent Soul ancestor would find it difficult to succeed one in a hundred times," he said.