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An urban construction's plan is must control Xincheng's development scale. When a city had about 500,000 populations, but there this stop construction will open a Xincheng. This kind of city's design are many. One kind of plan is constructs some small cities around the big city. The second kind of plan is each city is the facility service, but has a road to connect the city. The third kind of plan is revolves the big city to construct certain small cities, and various urban each other are then connected

Urban planning is building a new city to control the scale of development. When a city with about 500,000 population, there will be left open to stop the building of a new city. The design of many such cities. A programme is in big cities around the building in the city. The second programme is every city facilities for the End, but a road linking the cities. Third option is the construction of several major cities around the small city and the city will be connecte