Dealing with the problem of the compatibility between the original cities and the new cities caused by the expansion of the Yangtze River Delta region is the key to efficient capital allocation and high-quality growth in the Yangtze River Delta. Research shows that the current low efficiency of capital allocation in the Yangtze River Delta is mainly due to the obstructed capital flow, the same structure of industries, and the uneven financial development. Under the new layout of the Yangtze River Delta integration strategy, new cities have injected new vitality into this region. The undesirable factors that originally restricted the efficiency of capital allocation in the Yangtze River Delta are expected to be resolved through in-depth collaboration between the original cities and the new cities.First of all, actively explore a fiscal and taxation mechanism that shares investment and benefits. Only when the interests are clear can capital be allocated in a larger area in the Yangtze River Delta.Second, carry out rational industrial division of labor, establish a docking mechanism for industrial planning between the original cities and new cities, and promote the balanced development of industries in the Yangtze River Delta. Each city should proceed from the overall perspective and establish a reasonable industrial planning docking mechanism to enhance the comparative advantage.Furthermore, deepen the financial integration of the Yangtze River Delta to improve the overall financial development level. The advancement of financial integration will not only help create a financial agglomeration ecosystem in the Yangtze River Delta with complementary functions, superimposed advantages, and distinctive features, but also help form a "financial mosaic" phenomenon, promote the sharing of financial resources and financial circulation, and in turn promote the construction of Shanghai's "Financial Center".
