There is a matter today that takes "Ammonium Acetate Acetic Acid" as the core and takes it as the direction. It is necessary to study its rationale in detail and clarify the way it is used. Observing these two, or in various matters, has a unique role. Its nature and its changes should be studied carefully. To understand what it does in all things, it is necessary to study the classics in detail and refer to examples to explore its mysteries. Or in the field of chemical industry, or in the road of medicine, it should be reviewed to know its effectiveness in different situations. Only by careful study can we obtain its true meaning and make good use of it in practical application to achieve the success of all things.