In the world of immortality called "Jiuchen", practitioners use "bone tempering" as the basis - tempering the spiritual energy of heaven and earth into the bones. Each time one is tempered, life span and magical power will be increased by one point. But tempering the bones to the extreme will lead to "heavenly tribulation", and there is a truth that is deliberately concealed by the Immortal Sect: the aura of Jiuchen Continent actually comes from the remains of the creation gods who fell in the ancient "Bone-Broken War", and the "bones" of the practitioners are the containers of the gods' remnant souls. When a practitioner breaks through to the "Immortal Lord" realm, the skeleton will be completely "deified". At that time, the remnant soul will awaken, and the host will either be devoured into a puppet or merge with the remnant soul to become a new "broken bone".