In the context of the coordinated development of the Beijing-Tianjin-Hebei City Agglomeration, this small town in Hebei Province is profoundly showing the transformation and exploration of the metropolis circle and even the urbanization construction.

 

In recent years, with the continuous advancement of the integration of Beijing, Tianjin and Hebei, especially after the establishment of Tongzhou, the sub-center of Beijing, the non-capital functions of Beijing are gradually transferred from the six districts of the city to the "new center".

 

In fact, by convention and standard, Yanjiao should be within the commuting range of the Beijing metropolitan area.

 

According to the definition of the Research Group on Urban Agglomeration Transportation Integration of the Chinese Academy of Engineering, the metropolitan area is a social entity with comprehensive functions composed of several cities and towns, centered on the core city with obvious advantages and taking the commuting range as the dimensional space region.

 

Professor Lu Huapu, director of the Transportation Research Institute of Tsinghua University, believes that the urban circle is the daily commuting circle, the daily life circle and the daily activity circle of the residents, and there are boundaries. Commuting services in small hours should be an indicator of the size of a metropolitan area. Urban agglomerations, on the other hand, are production cooperation circles that are closely related to the upstream and downstream industries and need convenient freight channels to meet the needs of industrial logistics. They include urban circles and cities with multiple comprehensive functions without boundary restrictions.

 

He pointed out that the most important thing in urban land development is to promote the mixed use of land to meet residents' housing needs, living facilities, jobs and public services. To realize the integration of transportation and land use, promote the construction of eco-city units and mixed land use. Among them, the optimization and adjustment of transport and land use are beneficial to reduce the terminal time consumption and meet the high-frequency and large-scale commuting needs of metropolitan areas.

 

Under the combined action of the above reasons, the zero supply of residential land in Yanjiao in 2016 was finally presented in Sanhe City planning.