A dead ancestor's skull that Jiang Baiyu carries with him as a companion. He keeps it in a pet bed, covers it with satin, cleans its teeth with teeth-cleaning powder, and places food offerings in front of it. Later he stuffs it into a little pouch where it remains quiet without causing trouble. The skull appears to have some special connection to Jiang Baiyu, though its exact nature and origin are not fully explained in the text.
