One port, two cities, three belts and four districts.

Legal analysis: Since the 19th National Congress of the Communist Party of China, the provincial party committee and government have clearly put forward the development pattern of "one port, two cities, three belts and four districts" and put the construction of Bohai New Town in a more prominent position. Adhering to the concept of "drawing a blueprint to the end", we will solidly promote the pilot project of "nine roads and three interchanges", speed up the construction of the Central and Eastern European business center and corporate headquarters base in the new district, complete key urban construction projects such as "four vertical and seven horizontal" urban trunk road network, rain and sewage diversion, and Expo Happy Garden, and build the University Science Park in Bohai New District with 10 science and technology platforms and 4 provincial-level creative spaces and parks.

Legal basis: Article 4 of the Urban and Rural Planning Law of People's Republic of China (PRC) follows the principles of overall planning, rational layout, land conservation, intensive development and planning after construction, improving the ecological environment, promoting the conservation and comprehensive utilization of resources and energy, protecting natural resources such as cultivated land and historical and cultural heritage, maintaining local characteristics, national characteristics and traditional features, and preventing pollution and other public hazards, which is in line with regional population development and national defense. Construction activities in the planning area shall comply with the provisions of laws and regulations on land management, natural resources and environmental protection. The local people's governments at or above the county level shall, according to the reality of local economic and social development, reasonably determine the development scale, steps and construction standards of cities and towns in the overall urban planning and town planning.