The key of the design was to connect the four above-ground floors with the underground space. Considering functional demands and the laws of natural light, the design team intended to break the clear boundary of each floors, so that every floor can interpenetrate and integrate with the upper and lower storeys. In addition, large areas of French windows and translucent materials introduce natural light while ensuring privacy to some extent. The waiting area on 1F is a double-height space. The designers removed the original floor slab above this area, and preserved the main beam, on which the artwork "Naughty Cat" is placed. The artwork interacts with the reception desk, and enlivens the spatial atmosphere. Terrazzo boards are applied to large areas of the space. White tableware is put on brass panels in an orderly manner, which extends the space visually. The glass brick wall on 2F is embedded into the beam structure, bringing in light whilst ensuring privacy of the space. In a private dining room, the design team added a frame to the existing beam. Artwork "Singe attentif" squats in the frame and overlooks the sky, echoing the past scene where kids sat on old threshold and imaged what they hoped to be when growing up. The original main beam had to be retained in the small dining room. The design team covered it with wooden veneers, extended it, and added a screen to it to form an interpenetrating structure. The floor-to-ceiling window frames outdoor scenery.