Back at the beginning of the chapter, we find out that the boy who shot the arrow is Zian Lu, and that he's here to kill Zian. Zian tells us that he made it back to this world by using a "light worm," which is a kind of worm that can travel back and forth in time. He explains that the only way to get back to Zian is to cross over the Golden Bridge, which is the only place in the world where one can do so. He also explains that Zian's brother will soon be sacrificed for his family's living sacrifice.