Those Who Go Against the Path of Immortality with Mortal Bones

Mortal bones are recognized as useless bones in the world of immortality. Immortal bones are used to attract energy at the age of three, build the foundation at the age of ten, and transform into infants at the age of a hundred years. They are the gift of heaven. Three years of hard training with mortal bones is not worth three days of training with immortal bones. This is the story of a mortal who spends his life knocking on the door of immortality.