Crossing to Immortality: A Mortal Frame Asks the Blue Sky

Cultivators refine the dantian, refine the qi sea—everyone in the world cultivates this way. Only one lineage refines bone. Bone is the boat, qi is the water; if the boat does not sink, the person does not die. To advance a single realm, one must exchange bone once: first give away a section of one's own body, then install a section of someone else's. After nine exchanges, not a single piece of one's own bone remains, and one's name is gone as well. — Description from novelcodex.orgFull novel: Crossing to Immortality: A Mortal Frame Asks the Blue Sky — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠