China has a vast territory and there are objectively significant differences in the level of economic and social development between regions. As a typical case of seeking regional coordinated development in China's modernization construction, Guangdong Province is a microcosm of China's regional economic development. The report of the 20th CPC National Congress pointed out that common prosperity is the essential requirement of socialism with Chinese characteristics, and it is also a long-term historical process. Promoting regional coordinated development is the only way to achieve high-quality development, the key support to achieve Chinese path to modernization, and points out the direction for fundamentally solving the problem of unbalanced and inadequate development. Therefore, we must make overall efforts, give consideration to efficiency and fairness, promote coordinated regional development, and constantly promote the realization of common prosperity for all people. Promoting high-quality development through regional coordination requires coordinated efforts, with top-level planning and design taking the lead. For a long time, the objective differences in the resource endowments of various regions in China, mixed with the impact of strategic layout and industrial development policies, have led to the disharmony and imbalance of regional development in China, which is mainly manifested in the large gap between the eastern, central, western, northeast and other regions, the imbalance of urban and rural development, and the slow process of interregional cooperation, which seriously restricts the high-quality economic development and the road to common prosperity. Promoting regional coordinated development involves multiple aspects of policy mechanisms, and it is necessary to start from the top-level design, coordinate and promote at a high level, and take multiple measures to ensure the smooth implementation of the regional coordinated development strategy. Firstly, the mechanism design should be based on promoting regional strategic cooperation for overall planning, breaking regional restrictions, accelerating the construction of a unified national market, and promoting regional connectivity of infrastructure and public services; Corresponding policies should vigorously support the economic construction and development of relatively backward regions, strengthen policy sharing, narrow regional development gaps, improve the efficiency and free flow of production factors between regions, and optimize the talent and industrial structure between regions. Secondly, we should vigorously promote the trend of investigation and research, take root in practice, and refine industrial layout and cultivation planning based on local resource endowments and development characteristics. Scientifically layout regional functions based on the development conditions of each region, allocate industrial gradients reasonably, leverage the advantages of regional conditions, and promote coordinated development of spatial economy. Thirdly, integrating systematic thinking and new development concepts, following the objective laws of economic and social development, exploring a regional coordinated development mode of harmonious coexistence between humans and nature, promoting the optimization and adjustment of industrial structure, energy structure, etc., and achieving balanced and sustainable regional development. Promoting high-quality development through regional coordination requires simultaneous progress, balancing efficiency and fairness. At present, the imbalance and imbalance of China's regional development is the result of multiple and complex factors for a long time. But the Chinese path to modernization we want to achieve is the modernization of common prosperity for all people. We must give consideration to fairness and efficiency, offset the negative impact of Matthew Effect, and help to achieve common prosperity. Policy orientation needs to be committed to improving the level of modern infrastructure connectivity, based on the region