Four Generations Under One roof was a long online novel about a traditional Chinese family. It told the story of a family of four brothers in different historical periods. The novel takes the family as the unit and shows the life and changes of the traditional Chinese family by describing the interactions and conflicts between the family members. The main plot of the novel revolved around the struggles and growth of the family members. At the same time, it was also interwoven with some historical events and biographies.