Fortress Besieged was a classic of modern Chinese literature. The novel was set in Beijing, China in the 1930s. It revealed the complexity of human nature and the absurdity and cruelty of society by describing the life experiences of an intellectual. The main plot of the novel was as follows: Fang Hongjian was a senior intellectual living in Beijing. After graduating from a famous university, he was assigned to work in a scientific research institution. However, he found that his actual status and social status were not as high as he imagined, because his father was a rich businessman and his friends and classmates were all powerful people. In life and work, Fang Hongjian encountered all kinds of difficulties and setbacks. He found that his knowledge and wisdom could not solve the problems in life or even change his own destiny. He met some hypocritical and aloof people who only cared about their own interests and did not care about the feelings of others. He had also met some sincere and kind people. Although they were poor, they had a fulfilling heart. They had taught Fang Hongjian many life experiences and principles. Through Fang Hongjian's life experiences, the novel reveals the reality and absurdity of Chinese society at that time. In that era, the intellectual was regarded as a vulnerable group. They faced all kinds of restrictions and constraints, unable to freely express their thoughts and feelings. The novel also revealed some deep-seated problems in Chinese society at that time, such as the gap between the rich and the poor, class division, social injustice, etc. Fortress Besieged, with its unique narrative style and profound insight into human nature, became a classic of modern Chinese literature and had a profound impact on Chinese literature and culture.