There are two forms of hanging wall POP used in shopping malls: plane and three-dimensional. Plane wall POP is actually the poster advertisement we talked about before, while three-dimensional wall POP is the main content to be introduced in this chapter. Because the display conditions of the wall are very limited, the three-dimensional modeling applied to the wall POP is mainly semi-three-dimensional modeling. The so-called semi-solid shape is a shape similar to relief.