Mysterious Things

Mysterious people and mysterious things about Tai Chi, Yin and Yang, Five Elements, Six Paths, Bagua, Ten Heavenly Stems, Twelve Earthly Branches, and Twenty-Four Sections. He started like this: "I have a friend whose nickname is Guijianchou. He has a killing halberd in one hand and a black knife in the other. When ghosts see Guijianzou, demons cry when they see demons.