Since entering the 21st century，bet365 new user promo have become the concentrated expression of urbanization development in developed countries，Becomes an important spatial scale for examining national and regional economic development。Currently，my country plans a total of 19 bet365 new user promo，As of February 2019，Except Guangdong-Hong Kong-Macao Greater Bay Area，The State Council has approved 11 national-level city clusters。including Beijing, Tianjin and Hebei、Yangtze River Delta、The three major regions of the Pearl River Delta have developed into the most influential economic clusters in the country and even the Asia-Pacific region，Other bet365 new user promo are still being planned、In the process of development。Under the current economic situation，The construction and development of bet365 new user promo must focus on the implementation and implementation of "innovation、Coordination、Green、Open、Sharing the five major development concepts，Give full play to the complementary functions of each city in the urban agglomeration，Collaboratively improve urban total factor productivity through urban cluster development。

　　Space carrying bet365 new user promo elements

In a general sense, an bet365 new user promo agglomeration refers to a central city as its core、A collection of cities radiating to all directions。Throughout the history of economic development，With the development of different industries and the evolution of spatial layout，Functional division of labor and collaboration gradually formed among cities，And form a more closely connected spatial network through further bet365 new user promo planning and infrastructure construction，bet365 new user promo agglomeration is an objective reflection of the further development of urbanization and the evolution of industrial space。

Currently，The construction and development of bet365 new user promo has been elevated to an unprecedented strategic height in our country。Two of my country’s three major national strategies are related to the construction and development of bet365 new user promo。In addition to the two major national strategies of Beijing-Tianjin-Hebei coordinated development and Yangtze River Economic Belt development，The report of the 19th National Congress of the Communist Party of China pointed out，It is necessary to build an urban pattern with coordinated development of large, medium and small cities and small towns with bet365 new user promo as the main body；The fifth meeting of the Central Financial and Economic Commission also pointed out that central cities and bet365 new user promo are becoming the main spatial form carrying development elements。It can be said，bet365 new user promo are becoming the new direction of my country’s urbanization development，is an important space carrier to meet the people’s growing needs for a better life under the current international and domestic economic situation，It is also an important starting point to achieve spatial balance mechanism and high-quality economic development。

New ideas for bet365 new user promo economic development

In the process of urbanization in the past few decades，Big cities often have talents、A gathering place for capital and other economic factors。The main idea of ​​traditional urban clusters is to achieve inter-regional economic growth through the absorption of factors。However, from a space perspective，The problem behind this growth logic is that it ignores the regional economic and population carrying capacity。As our country’s economy enters a new normal，How to achieve high-quality growth，Becoming a new issue facing urban development。Through the construction of bet365 new user promo，Guide the transfer of some functions of big cities to surrounding cities in a planned way。In this way，Having solved the big city disease，And through the strengthening of economic ties，Driving further development of surrounding cities，The development of bet365 new user promo has become a new idea for solving urban economic development。

Solving the three major contradictions in urban economic development is the driving force behind the development of bet365 new user promo in my country。With the increasing imbalance in the development of large, medium and small cities，Urban economic construction has exposed three major contradictions: First, the contradiction between industrial chain transfer and industrial transfer。What small and medium-sized cities hope is "industrial transfer"，Strive to attract some high-quality industries and enterprises through industrial transfer，Thus breaking the curse of low-end locking；What big cities, especially large and mega-cities want, is "industrial chain transfer"，That is, transferring non-core links in the industrial chain，Thus successfully realizing industrial upgrading and conversion of old and new driving forces。This contradiction has caused the industrial upgrading of large cities to slow down，The industrial positioning of small and medium-sized cities is unclear，There is not only no coordination but vicious competition among cities，Resulting in the transfer of some labor-intensive industries to Southeast Asia。Second, there is a contradiction between economic growth and environmental protection。Under the conditions of lack of technology and capital，It is not only difficult for small and medium-sized cities to realize that "lucid waters and lush mountains" are "gold and silver mountains"，On the contrary, it is easy to become a "pollution haven"。The third is talent、Imbalance between technology and capital flows。Especially in small and medium-sized cities in the central and western regions，It is easy for "factor outflow leading to industrial weakness，A vicious cycle of weak industries leading to further outflow of factors。The construction of bet365 new user promo is very helpful in resolving these three major contradictions。On the one hand，Urban clusters enable large, medium and small cities to collaborate and help each other，Everyone takes what he needs，No more beggar-thy-neighbor、Fierce competition。On the other hand，Surrounding small cities rely on regional central cities，“Huddle together to keep warm”，Not only can it greatly alleviate the outflow of resources，And can undertake the industrial chain links transferred from central cities，Concentrated advantageous industries，Formation of dynamic comparative advantage。

　　New starting point for regional economic bet365 new user promo

Every city has different factor endowments and development foundation，Only by continuously leveraging the comparative advantages of each city，On the basis of urban interconnection，Form complementation and interconnection，In order to drive the overall development of bet365 new user promo，Maximize total utility。Vice versa，If cities cannot give full play to their respective advantages，It is prone to unfair competition，The formation of ineffective output supply and vicious resource competition，This is also an important aspect involved in my country’s supply-side structural reform。Using bet365 new user promo as a new starting point for regional economic development and construction，It is the embodiment of the basic laws of economics in the spatial scope。

At a time when more emphasis is placed on the quality of economic development，The overall development of bet365 new user promo also means higher quality economic growth - the construction and development process of bet365 new user promo，Not only a process that promotes total growth，It is also a process of liberating and developing productivity。This process is not only the development of different factor endowments between cities within the urban agglomeration，Form a more optimized economic structure in terms of regional spatial structure，It is more reflected in the movement between different cities in the urban agglomeration through various industries、Upgrade，And then form a new industrial structure within each city。Some industries or parts of the industrial chain in the original central city are developed in new forms in related cities around it，It not only drives the economy of surrounding cities，It also alleviates the pressure on the environment and resources carried by the development of central cities，At the same time, it also frees up development space for the industrial upgrading of central cities。

From the perspective of urban economics theory，Urban clusters maintain the economies of scale advantages of traditional bet365 new user promo，further cultivated spatial economies of scope and regional synergy，Release technological spillover effects to a greater extent，At the same time, expand the comparative advantage formed by the industrial division of labor emphasized by classical economic theory to a larger level of regional division of labor。Take Beijing as an example，Since 2014，Beijing clarifies its strategic positioning as a capital city，And begin to distribute “non-capital” functions to surrounding areas in an orderly manner。Over five years，Beijing’s air quality has been significantly improved，Industrial structure continues to be optimized，And passed the planning and construction of Tongzhou Beijing Sub-Center and Xiongan Non-capital Functional Concentration Area，Further expanding Beijing’s overall strategic spatial pattern，Opening up a new situation in the construction of world-class urban agglomeration in Beijing, Tianjin and Hebei。

　　Integrate into the global innovation network and bet365 new user promo chain

First，As economic globalization enters a new stage，In the development process of bet365 new user promo, more attention should be paid to integrating into global innovation networks and industrial chains，Collaboratively improve urban total factor productivity。For the Yangtze River Delta、In terms of mature bet365 new user promo such as the Pearl River Delta and Beijing-Tianjin-Hebei，Should develop towards a world-class urban agglomeration，Focus on industrial innovation within bet365 new user promo，Make it a driver of economic revitalization in northern my country、A regional growth pole where the southern economy continues to thrive。With smart cities、Construction of digital economy，The development of bet365 new user promo must also keep up with the times，Fully cultivate technological advantages，We can no longer follow the old path of extensive development。

Secondly，For other bet365 new user promo in the process of formation，We need to build the “Five-in-One” in an all-round way。The development and construction of bet365 new user promo is not only in the economic sense，We should pay more attention to its livelihood significance and cultural connotation，Pay attention to the natural environment within bet365 new user promo、Co-construction of humanistic environment and social environment。In addition，Market clusters and bet365 new user promo are not one or the other、Incompatible，bet365 new user promo in the process of formation must continue to agglomerate within the city in a planned manner；Cannot blindly imitate mature bet365 new user promo，Especially cannot cross the laws of economic development，Relying solely on infrastructure construction to build bet365 new user promo。

Finally，The concept of urban agglomeration itself emphasizes the division of labor and collaboration between cities。The other side of my country’s rapid economic development is that the current economic development is still unbalanced and inadequate，The economic development results of some big cities cannot benefit more people。In the overall planning of bet365 new user promo、Under the guidance of common development，Further play the role of central cities in leading and demonstrating，Lowering various barriers between cities，Collaborative development、Co-construction and sharing have become the core and gist of future urban economic work。

　　(This article is part of the National Social Science Fund Youth Project “Growth、Research on China’s Optimal bet365 new user promo Scale under the Triple Effect of Environment and Crowding” (18CJY015) Phased Results)

(Author’s affiliation: Business School of Renmin University of bet365 new user promo；School of Economics, Sichuan University)