1, scientific and technological progress, generation difference elimination
The agricultural civilization in ancient Chinese mainland created the glory of the Central Plains Empire in the Middle Ages, which has extremely complicated reasons, such as geographical advantages and cultural advantages. At the same time, it also needs nomadic, fishing and hunting state power, which depends on God to provide food. Because there is no fixed farming land and a series of settled civilizations, they can only plunder south after natural and man-made disasters to meet the needs of survival and ambition.
With the construction of the Great Wall between the north and the south, the great defense line of the Central Plains Empire has been established, which is convenient? Highway? The extensive development of canals and canals made nomadic, fishing and hunting regimes worry about looking at the high walls and the branches of Jianghuai in the Middle Ages, which opened the gap between the farming civilization in the Central Plains and other civilizations in East Asia at that time. However, history needs progress and human beings need to learn. With the development of time and the integration of civilizations, the time gap will gradually disappear.
2. Integration of Eurasian countries
Therefore, in the long-term love and killing between the Central Plains Empire and nomadic, fishing and hunting regimes, ethnic integration never stopped. In other words, Yi Di's obsession in the Central Plains Empire has become increasingly blurred. So at this time, whether it is the north or the south. Face the past? The first Central Plains Empire in the world? I no longer feel inferior, because I have what you have and I have what you don't have.
Coupled with the development and extension of the Silk Road on land, the culture and resources from distant Africa and Europe, and even the South Pacific, made the barbarians in Xiqiang, Dongyi and North stand erect, especially with the arrival of the firearms era, the fortifications of the cities that the Central Plains Empire was proud of became unreliable, and the competitive advantage of the Central Plains Empire plummeted. Therefore, during the Ming and Qing Dynasties, invaders from land and sea flocked to the Central Plains Empire with all kinds of firearms. So the dream of Han and Tang dynasties was shattered.
In the era of navigation, it is backward in the world.
Although this is the Central Plains Empire, this is the Ming and Qing Dynasties, and it is still magnificent, but the arrival of the era of great navigation has even wrapped the Central Plains Empire in global competition, and because of the difficult development of capitalism in the autocratic empire, ancient China has completely fallen behind, and can only be said to be lonely in a self-righteous corner.