The Monument to the Tower is a famous work of Yan Zhenqing in his early days. Its writing style is respectful and sincere, which is directly related to the two kings of Europe, Henan and Chu, but it has obvious similarities with the writing style of the Tang Dynasty, which shows that Yan Zhenqing paid great attention to absorbing nutrition from the folk calligraphy art while learning from the previous calligraphers. The whole article is well-structured, with Wu Si fence between the lines. The stippling is round, dignified and beautiful, as static as moving, and fascinating. Although this monument is not the representative work of Yan Zhenqing in his mature period, it is also very different from his later books such as Wonderful North of Yan Jia and Tan Ji of Ma Guxian, but it is the first book of Yan Shu and the first step of Yan Kai's success. Many people who study Emperor Yan started from this monument and entered its temple.