Breaking boundaries, integrating and sharing ": This project includes two public institutions with different attributes, Jing'an Archives and Daning Community Activity Center. The design starts from the essential characteristics of both institutions facing and serving the public together, with" publicness "as the core. By establishing an integrated, shared, and three-dimensional" public space system ", the inherent administrative ownership and spatial use boundaries of the two institutions are broken, and the extension and manifestation of this system are transformed into urban public cultural spaces that are known, perceptible, and accessible to the city. The integration of the two museums brings more diverse and rich spatial experiences to the public, and due to its ultimate presentation of publicness, transparency, and openness, it has become a truly public urban building.