How to understand that contrast and harmony are the general principles of formal beauty

This is related to China's traditional aesthetic thought. Contrast and harmony are the general principles of formal beauty, that is to say, all principles of formal beauty should follow contrast and harmony. Why do you say that? You see, all the summarized principles of formal beauty, such as symmetry, proportion and order, rhythm and rhythm in balance, organize visual elements (such as pictures and words) in a certain form on a plane. These laws are unified in this overall picture. No matter how it is placed and which principle it follows, it is inseparable from contrast and harmony. You will see the effect of contrast and harmony when you bring any works, because things are always in the process of contradictory movement, and people's visual feelings and experiences are carried out according to this general law. How to explain other laws of formal beauty? These are the forms of natural beauty that people gradually discover in the process of production and labor. Then sum up, but it's just a form of beauty. When we design an organization, we have a balanced psychological state of human vision, so contrast and harmony always play a role everywhere.