In 'Dream of the Red Chamber', the Jia, Wang, Shi, and Xue families were the representative classes of the aristocratic society of the Qing Dynasty. There was a complicated relationship between them, the most famous of which was the struggle and alliance between the "Four Great Families". The Jia family was the most illustrious family among the four great families, and it was also the main background of the story of 'Dream of the Red Chamber'. The ancestor of the Jia family was Jia Daishan, a famous politician and writer of the Qing Dynasty. In the novel, the decline of the Jia family was caused by the corruption of Jia Baoyu's father, Jia Zheng, and the greed of the family members. The Wang family was another prominent family among the four great families. Its ancestor was Wang Ren, the ancestor of the Wang and Xue families. The characteristics of the Wang family were wealth, arrogance, and arrogance. The Shi family was one of the four major families. Their ancestor was Shi Xiangyun's father, Shi Ding. The characteristics of the Shi family were kindness, integrity, and simplicity. The Xue family was the last of the four great families. Their ancestor was Xue Pan's father, Aunt Xue. The characteristics of the Xue family were greed, selfishness, and viciousness. The relationship between Jia, Wang, Shi, and Xue was very complicated. There were alliances and conflicts between them. In the novel, the struggle between the four families was the core of the entire story and one of the most fascinating parts of 'Dream of the Red Chamber'.