Yanjiyou Capsule hotel & Bookstore is a part of the Fangyukong Complex. Commissioned by Fengyuzhu, Atelier Tao+C redesigned and regenerated the 232sqm old building by inserting a capsule hotel that consists of an accommodation area for 20 people, a community bookstore and a library into the 7.2m-high two-story space. The biggest challenge and key of the design was to ensure the privacy of the accommodation area while giving openness and continuity to the public areas within such a compact space. The idea of "buildings inside the building" blurred the boundaries of various spaces and formed a balance between the privacy of the "floating" accommodation area and the openness of the public space on the ground floor. However, when people are looking at the front of the two "buildings" from the entrance hall, they will find a clear cross-section relationship between the staggering floor slabs. The exterior renovation is an extension as well as a reflection on the reorganization of the interior spaces. Based on the vertical programming of the capsule rooms, the architects made restrained openings on the exterior walls to maintain the original simplicity of the building. Meanwhile, the architects cut the east gable wall and embedded a transparent structure of wooden frames and corrugated polycarbonate panels, hence introducing the green scenery of the mountains and forests into the interior. The openings on the ceiling also bring rich natural light into the interior space.