"The Gate of Europe" is an office building for rent, providing users with comfortable and convenient working conditions. Each building has 10 4m/s high-speed elevators, and the air conditioning system has 174 thermometers and 46 hygrometers, which automatically send information from the control center. The communication system can transmit sound, words and images with the most advanced technology. Each system has the function of automatic fault monitoring. In addition to the central control room, each floor has an intelligent secondary control center, which can work independently. The central control rooms of the two buildings are connected together. If one side breaks down, the other side can replace the work, so that the building can keep running under any circumstances.