As a community public space, the project provides a social and interactive place for the whole community, so as to improve the indifferent relationship between modern residential neighborhoods. The biggest problem of the project is that it is located in the underground space, with poor indoor lighting and deep indoor space.Introducing the design of the courtyard to the ground landscape forming the unique fifth facade of the interior space. Thus, natural light is introduced into the interior to solve the problem of insufficient lighting in the interior space.