Fortress Besieged was regarded as a classic in the history of modern Chinese novels. The novel used the life of a Beijing citizen as the background, and through the description of the protagonist Fang Hongjian and his wife Sun Roujia's marriage story, it revealed the various problems of Chinese society at that time and displayed the richness of human nature. The novel has profound thoughts and unique literary style. Through meticulous descriptions and deep thoughts, the author reveals the various problems of Chinese society at that time, such as the concept of marriage, morality, education, etc., which had a profound impact on Chinese culture and society at that time. At the same time, the novel also has a very high artistic language concise, vivid, full of philosophy and charm, becoming a classic in modern Chinese literature. Fortress Besieged is a literary work with a high level of ideology and artistry. It is known as a classic in the history of modern Chinese novels. It has a far-reaching impact on the development of modern Chinese literature and the reflection of Chinese novels.