Dream of the Red Chamber was a classical Chinese novel that described the family disputes and grudges of Jia Baoyu, Lin Daiyu, Xue Baochai, and other characters in the feudal society of the Qing Dynasty. The decline and ending of the four families was one of the important plots in the novel. The four families were the Jia, Wang, Xue, and Shi families. In the novel, these families gradually declined and declined for various reasons. The final outcome was as follows: Jia Baoyu's family was eventually defeated and Jia Baoyu himself was forced to become a monk. Lin Daiyu's family, the Wang family, gradually declined due to internal disputes and external political factors. Lin Daiyu's father, Grandmother Jia, died and Lin Daiyu was forced to marry into the Xue family. 3. Xue Baochai's family, the Xue family, gradually declined due to poor management and internal disputes. Xue Baochai eventually married into the historian. Most of the family members of the Four Historians chose to leave their hometown to make a living elsewhere. In the end, Shi Xiangyun was the only one left in the Shi family. The ending of the novel shows the decline of the feudal society of the Qing Dynasty and the disputes between the families. At the same time, it also reflects the complexity of human nature and the impermanence of fate.