When a fox is fifty years old, it can transform itself into a woman; when a hundred years old, it becomes a beautiful female, or a spirit medium, or an adult male who has sexual intercourse with women. Such beings are able to know things at more than a thousand miles' distance; they can poison men by sorcery, or possess and bewilder them, so that they lose their memory and knowledge; and when a fox is thousand years old, it ascends to heaven and becomes a celestial fox.[7]