This chapter opens with a discussion of the fact that spirits can live much longer than humans, and that humans can only live a limited amount of time before they die. This is because the spirits have the ability to train and achieve a long life span, which is why they are able to live so long. The discussion then turns to the question of spiritual power, and how it can be used to maintain one's human form. It is not enough, however, for the spirits to be able to maintain their human form, because they are born with spiritual power in their body. They are different from beasts, and they have different physical conditions that allow them to be endowed with some of their spiritual powers. The only thing that can change a person's life span is when he or she leaves the world. The fox, for example, has lived their entire lives believing in one person and cannot find another.