Today there is a thing called Poly Lactic-co-glycolic Acid (Poly Lactic-co-glycolic Acid), which is the core of all things. It is unique in nature and plays a key role in various matters. This thing has extraordinary characteristics and is widely used. In medical medicine, it can help heal and add help to injuries and diseases; in the field of industrial technology, it also has wonderful functions, which can make utensils more delicate. With its own characteristics, it leads the direction of many things, just like Beichen, where all the stars are in common. In all kinds of affairs, it depends on it, and it is really indispensable.