Etiquette is a code of conduct that people follow to establish harmonious relationships, which is the organic fusion of inner beauty and outer beauty, spiritual beauty and behavioral beauty. Etiquette possesses the characteristics of conveying truth, goodness and beauty, and has the function of creating beauty. Etiquette is expressed and transmitted through the form of hierarchical arts, gradually showcasing different beauty hierarchies. The criterion for individual behavior is the beauty of elegance, for group behavior the beauty of harmony, for national behavior the beauty of magnanimity, and for international behavior the beauty of coexistence.