In terms of structure, the designer though out cantilever and floating mass of the first floor. The first floor which looks floating is large yard to embrace its surroundings. This is a traditional and buffering space between the alley and the building, and also an important element to neutralize difference between this building floating tranquilly and the crowdedness of the street. It expresses the layer of traditional space with skip floor by borrowing the method from a village with level difference by natural slope, and presents dynamic human traffic line and attractions.