According to the poster news report, the landmark buildings in the two major cities of the Yantai Development Zone resumed their work intensively. Among them, after the completion of the Yeda City Plaza, a functional pattern of “1 + 2 + 1” will be formed. "1" is the administrative office gathering area. Urban construction, marine, market supervision and other departments and Yeda Urban Development and Yeda Economic Development will be settled. "2" is the two centers of government service and smart city command. The government service center will create a "first window" for the work committee management committee for enterprises and the masses. The smart city command center integrates 5G, blockchain, artificial intelligence and other cutting-edge technologies and ubiquitous data resources, and becomes a joint command platform and intelligence The "urban brain".