The principle of fine hand-cooking art prescription wound care cream with Centennial Cream is based on the fact that the skin has three barriers: physical barrier, chemical barrier and biological barrier. The first line of defense is to build a physical barrier, commonly known as "building a wall." The effect is greatly guaranteed. This is similar to Qin Shihuang's intention to build the Great Wall. Simple, rude and practical, it can directly prevent the invasion of germs and foreign bodies.