The designer applies materials which are as simple as possible to show structure of the building and design which is as less as possible to endow the space infinite imagination.1st Floor is the service counter of sand map area and multimedia exhibition hall. 2nd floor contains business meeting, show and entertainment area of the sales center. In contrast with the thickness and weight on 1st floor, 2nd floor is more pure and lithe. The circle void area on the 2nd floor is the luminous point of the area from where the sand map can be overlooked. This offers great convenience for the business meeting.