In this chapter, we are introduced to the "butterfly of malice" , a kind of butterfly that is constantly trying to catch the attention of one's brother. This time, however, it is the "delicious" cake that is the focus of the action. When the cake is served to little jian, the butterfly tells him that it is good for prevention of local parasitic diseases, but he wants to be with his brother. He asks to be allowed to accompany him on an outing, but little guang refuses to allow him to do so.