Four generations under one roof referred to the situation where four different generations lived together in a family. In traditional Chinese culture,"four generations" referred to four generations, while "living together" meant living together. Four generations living together as a family structure had a profound meaning in Chinese culture. It represented the integrity and stability of a family and also reflected the importance of family, kinship and unity in traditional Chinese culture. In a family of four generations, family members often supported each other and took care of each other through every stage of life. This kind of atmosphere of unity and mutual help helps to strengthen the emotional connection and cohesion between family members, and also helps to promote the harmony and stability of the family and society. In addition, having four generations under the same roof also represented a family's historical heritage and cultural heritage. Families with four generations under one roof often had rich historical heritage and cultural traditions. These cultures and traditions not only represented the values and beliefs of a family, but also made important contributions to social and cultural richness. As a family structure in Chinese culture, four generations living under one roof has rich meanings and important meanings. It helps to strengthen the emotional connection and cohesion between family members, and also makes an important contribution to social and cultural richness.