What is the significance of Wen Xin Diao Long and Shi Pin to the development of literature?

Wen Xin Diao Long made a comprehensive and systematic exposition of style, creation and literary criticism, and established its own literary thought system. Shi Pin not only comments on the achievements and styles of many poets since the Han and Wei Dynasties, but also systematically discusses the origin and development of poetry. These two works not only have a clear tendency to oppose formalism, but also push literary research to a new stage of in-depth development, which has a far-reaching impact on the development of literary criticism and literary theory in later generations.