To have a comfortable is the goal that many people pursue in combat. The leading solution to this case is how to enlarge the limited public area and try to maintain the integration of the study with the public area and retain the possibility of independent use in the future. In order to continue the sense of openness of the space, we chose to use "light" as the medium to connect the various fields. In the layout of the main compartments and cabinets in the public area, the design without backing was adopted to guide the light and diffuse the surroundings to shape the integrity.