Why is the Jiangnan area so prosperous but so few dynasties have their capital there?

A country’s economy is the top priority for national development. However, looking through the history of our country, we can find that not many countries in the past dynasties established their capitals in the economically prosperous areas south of the Yangtze River. This is a very strange thing. First of all, we need to know that there were two principles for building a capital in ancient times. The capital is the lifeblood of a country, so it must have an advantage in terrain and must be a geomantic treasure. On the other hand, our country is often invaded by ethnic groups in border areas, so the location of the capital must be convenient for combat. 1. Feng Shui superstition

In ancient my country, we attached great importance to superstition. Ordinary people would ask a Feng Shui master to calculate where they would build a residence and where they would be buried after death. As the master of the world, it is important to establish a capital. Very seriously. In the history of our country, there were also some dynasties that established their capitals in the Jiangnan area, but these dynasties did not survive long. Any emperor who establishes a capital will be able to build his foundation for generations to come. Therefore, based on the lessons of establishing a capital in Jiangnan, the capital will not be built in the Jiangnan area. On the other hand, although the Jiangnan region is vast, it has many plains and no mountains that can resist invaders. 2. The terrain of Jiangnan

We can find that all dynasties have been invaded by northern nomads. Because compared with the harsh living environment in the north, the Central Plains region, with its vast territory and abundant resources, has become a hot spot that northerners compete for. Moreover, most northerners are good at riding and shooting, and all of them are brave and good at fighting. If the Jiangnan area is set as the capital, once the northern nomads come to invade. Spreading Cairo's Jiangnan terrain will facilitate the attacks of northern nomads. If the country fails to do a good job in defense, the country will be at risk of destruction. Therefore, for these reasons, the country will not build its capital in the Jiangnan region. 3. The Importance of the Capital

Let’s look at Beijing, the current capital of China. There are mountains as natural barriers to the north and west, as well as the Great Wall, a military defense line. Once a war breaks out, it will have a unique geographical advantage. Therefore, setting the capital in Beijing satisfies the conditions for establishing a capital in ancient my country.