Architectural thinking was applied to spatial transformation. The floor slabs and rooftop along the central axis of the foyer was dismantled, which divided the building into two parts: the front and rear blocks. The designers created an atrium in the building, in order to let sunlight directly filter into the central hollow space on each floor. Originally, there were only two areas allowing daylight to enter the interior. Through adding a new architectural block, the design team created an additional core area that introduces light in. Besides, a layer of perforated aluminum panel is set under the glass roof, which creates a sense of formality as light falling down. The angles of sunlight vary throughout the day and year. Parts of the ceiling above the living room and dining area were cut, in order to connect the public areas as much as possible. These new window openings bring ample natural light into the space, and enhance interaction between the inside and outside. Conventional independent walk-in closet cannot be found in the bedroom. Instead, the wardrobe is set between the bedroom and bathroom, surrounded by the circulation routes. The bathtub can be seen from the bed area. The spatial layout is based on rational thinking, which takes into account functionality, the family's living habits, and interaction among people, space and daylight.