First, the land and water transportation is convenient. Shanghai used to be a river port, but now it has a seaport. This is an important advantage of Shanghai's economic development. The advantages of Shanghai's river port and convenient access to the sea are the important reasons why Shanghai has changed from a small fishing village to a big city. It is also an important reason for foreign countries to lease parts of Shanghai.

In the process of gradual development, Shanghai has accumulated and attracted a large number of migrants, which has promoted Shanghai's economic development and strengthened its importance. In this process, it is also a period of rapid development of land transportation in Shanghai, such as the construction of railways and highways, which also strengthens Shanghai's transportation advantages. With the continuous increase of Shanghai's population and the improvement of its affluence, an airport has appeared in Shanghai. The development of air traffic has further strengthened the advantages of Shanghai's comprehensive transportation. Even now, there are not many cities in the mainland with land, sea and air transportation conditions.

Second, it is densely populated. This is a rare advantage. Shanghai is the most advantageous city on the mainland. Because Shanghai is the most populous city in China. Shanghai is also the most densely populated province in mainland China. Shanghai's population density can reach 3,000 people per square kilometer, which is more than 20 times that of China.

High population density can bring many advantages or economic benefits. It can improve the efficiency of business, service, transportation, telecommunications and industrial operation.

Third, Shanghai has a strong talent pool. The density of talents in Shanghai is relatively high, and the average education level of Shanghai population is also relatively high. The reason why there are so many talents in Shanghai is that Shanghai's economy is relatively developed, and it has trained more talents by itself and absorbed a large number of foreign talents, such as attracting a large number of talents from the countryside.

Fourth, due to historical reasons, Shanghai had a good economic foundation in the past. Such as a large number of factories and infrastructure.

Fifth, the state policy supports it, and the relevant national development policies are inclined to it. The basin regional economy is a new economic growth point of Shanghai shipping economy, which promotes the economic development of inland river basins.