Four generations living under the same roof usually referred to the situation of four consecutive generations living under the same roof in a family during the Qing Dynasty. During this period, people's living standards improved significantly due to social and economic development, universal education, and population growth. At the same time, due to the strengthening of the family concept under the feudal system, the family form of four generations living together was widely accepted in Chinese society. In the era of four generations living under the same roof, people's concept of family was deeply reflected. The emotional bond between family members became closer. They experienced the rise and fall of the family together, forming a deep family sentiment. At the same time, the family of four generations also made an important contribution to the stability and development of society, forming an atmosphere of unity and mutual assistance, laying the foundation for the progress and development of Chinese society.