Why can the Chinese nation have such rich calligraphy treasures?

I think this should be related to the characteristics of China people, the hierarchical system and examination system in China since ancient times. China people are diligent and eager to learn, and at the same time have the characteristics of worship and blind worship of some celebrities; The strict hierarchy makes some senior officials and nobles have time to do these things and beautify them; After thousands of years of imperial examinations, people who want to enter the official career must practice their words well. A simple view.