In this chapter, Duan asks his old friend to tell him the secret language of his family. Duan wants to know if this kid knows this secret language, and if he's defending him. When Duan tells him that this is important to his family, he asks how he can understand the words he wrote in the riddle. He tells Duan that the riddle was given down by his ancestors and that only the descendants of the family are able to understand it.