Crossing into Immortality: A Mortal's Bones Ask the Azure Heavens

People everywhere cultivate by tempering their dantian and refining their qi sea. Only one lineage cultivates the bones. Bones are the boat, qi is the water. As long as the boat does not sink, the person does not die. To reach the next realm, they must replace a bone each time: first give up one of their own bones, then put in someone else's. After nine replacements, not a single bone in their body is their own, and their name is gone too.