The Siege of Qikou has mainly narrated that Cheng Jinyuan, president of Northwestern Shanxi Chamber of Commerce, had been led to the cusp of historical changes to fight bravely together with local people during 1936 to 1949. Cheng Qianzhi, the oldest son of Cheng Jinyuan, was sent by Yan Xishan there to serve as a battalion commander of the Shanxi and Suiyuan Army, while Cheng Chongzhi, his second son, was assigned by The Communist Party of China to build the primary-level organizations of the Party in his hometown. Qikou had been under the siege of Japanese invaders for three times which had made Qikou the scene of fierce fighting. After suffering tremendous sacrifice, Cheng Jinyuan, who had been mistrustful of CPC before, had gradually realized that CPC had and would always unite closely with the masses and march forward with no fear of sacrifice which might be the reason that CPC was far stronger than Yan Xishan or Chiang Kai-shek. Together with his fellow citizens, he had firmly supported CPC and devoted all himself to the cause of national liberation through arduous struggle and sacrifice, displaying an epic of heroism to a large extent. The novel is full of twists and turns and quite readable by successively demonstrating the front-line battlefield and the espionage war. Set in the anti-Japanese war period, the novel has vividly discussed the three effective weapons of CPC to fight against the enemies: the united front, the armed struggle and the building of the Party, and stressed the formation and historical importance of the united front.