The article discusses the writing style of Zhang Yue and Su Ting, known as Yan Xu grand advanced writers in ancient China. Their prose is admired for its balance, freshness, elegance, and grandeur, providing valuable insights for the literary movements of the Tang dynasty. Their work holds a significant place in the history of prose during this period, serving as a bridge between different styles and influencing future generations of writers. It is important for academic circles to give attention to their contributions and further explore their impact on Chinese literature.