Stealth in Troubled Times

An ordinary book hides an inheritance, an animal skin conveys both light and dark skills, and a cart of ancient books is exchanged for a precious medicine book. What is a fairy? What is a real person? Why are there legends about real people in the world but few records about heavenly beings? A star road can lead to another time and space, but it needs the guidance of someone who can step into the past in the future. Heavenly beings can only wait and wait. . .