The article discusses the aesthetics of Caiyi and its impact on Chinese modern practical aesthetics. Caiyi believes that beauty is based on rules and standards, with typical examples revealing universality within individual forms. Art reflects objective reality, and aesthetic perception is fundamentally an understanding of objective beauty. Caiyi's aesthetics influenced practical aesthetics like Li Zehou's theories, critiquing the idea that labor's outcomes can be positive for aesthetics. The discussion highlights the subjective nature of beauty perception, where different aspects of an object can be beautiful or not depending on the viewer's perspective.