Pay attention to etiquette system. In ancient China, there were many purposes to stipulate the dress behavior of officials, the most important of which was the emphasis on etiquette system in Confucianism. In ancient China society, the etiquette system was very strict, which was not only a moral norm and cultural heritage, but also one of the means to maintain social order and power stability. Officials usually refer to people who hold positions in government agencies or public management systems, and their duties and authorities are usually related to government, administration, law or social management.