The hotel apartments are three buildings of more than 20 floors with the height of about 70 meters, and the construction area is about 120,000 square meters. It is the main function of the hotel apartment to provide convenience to the personnel who arrive at the Exhibition Center in the evening. Because of the problem of time difference, it is necessary for some personnel working in the Exhibition Center to carry out business contact in the Exhibition Center very late in the evening or very early in the morning. So the Exhibition Center will build the hotel apartment, solve the housing problem for the working personnel, enabling them to work in the Exhibition Center feeling at ease.