The feudal system is in the ancient dynasties, a relatively common system, the sub-feudal system is to divide the country into large and small princely states, let the kings of these princely states to lead, to manage, but these princes are loyal to the Emperor of Tianzi, the earliest implementation of this sub-feudal system is the Xia Dynasty, the Shang Dynasty, the Zhou Dynasty, these three dynasties, the Xia Dynasty is not advocating the sub-feudal system, but when the Xia Dynasty was just established, it was actually a tribal alliance composed of a tribe, and the king of the Xia Dynasty was the king of the largest tribe , also equivalent to the ally of the tribal alliance.
And the Shang Dynasty is also because itself is a feudal state under the Xia Dynasty, but defeated the Xia Dynasty and established the Shang Dynasty, but these feudal states still exist, coupled with the annexation of the surrounding areas, as well as the submission of the surrounding countries, so it is also a sub-feudal system, to the Zhou Dynasty, the Zhou Dynasty Wu King Fellen destroyed the Shang Dynasty, because of the situation at that time, there are many princes, and can not actually rule the world, plus many places are wasteland, the Tiangao Emperor is far from being able to rule at all, In addition, the inconvenience of transportation is naturally impossible to rule directly, so the sub-feudal system is adopted.
However, there is a very big drawback in the sub-feudal system, that is, there are too many princes, too many princes, when the royal family is strong, it is better to say that as long as the royal family declines, the princes will slowly grow bigger, and annex the surrounding countries, and finally cause division, or dynastic change, for example, the Xia Dynasty was destroyed by the Shang Dynasty of the princely states under it, and the Shang Dynasty was destroyed by the zhou dynasty under its subordinates, and the Zhou Dynasty finally the royal family declined, the world split, resulting in national chaos, and finally the Qin Dynasty was destroyed by the feudal state under it.
Qin Shi Huang abolished the system of sub-feudalism because of this lesson, the Qin Dynasty is the only dynasty without princes, of course, what is said here is not only the princes with fiefs, but even the names of the princes, but later when the Han Dynasty was established, Liu Bang sealed a lot of princes, resulting in the outbreak of a serious Rebellion of the Seven Kingdoms when the Han Jing Emperor, Liu Bang did not know that the princes would cause civil unrest? Obviously, Liu Bang was very aware, because those princes with different surnames who had just begun to divide the seals began to be in turmoil when the Han Dynasty was established shortly after the establishment of the Han Dynasty, and Liu Bang suppressed them one by one, and it was obvious that the princes rebelled, which was a very important factor of instability, even if the princes were their own families, there would also be turmoil.
After all, the living example is here, most of the princes and princes of the Zhou Dynasty are their own families, but they should still support the army to stand on their own, regardless of their lives and deaths, and when Liu Bang established the Han Dynasty, it was not long before the Qin Dynasty unified the world. Of course he knew, but he couldn't.
The newly established Han Dynasty was not stable, coupled with the fact that these kings with different surnames were all great heroes and supported the army and respected themselves, Liu Bang had to win them over, so he named them princes, but after they were destroyed later, Liu Bang only replaced these princes with his own descendants, and the others remained unchanged, in fact, the problem still existed, it was normal for the family to fight, but Liu Bang was also very helpless, and he had no way but to use this kind of expedient strategy.
First of all, the foundation of the Han Dynasty is not stable, the princes need to be stable in the outside world, and most of them are in the east, about two-thirds of the country is still under the control of the central dynasty, the main first point of the princes is to defend the frontier, while governing the country, can save a large part of the strength of the central dynasty, plus the foreign surname of the king just removed, there are still remnants of these places, if directly under the leadership of the central dynasty, it is very likely that the rebellion will still occur, let the princes sit in the town, a large part can curb the occurrence of this situation. At the same time, it can also reclaim wasteland, reduce the pressure on the region of the Central Dynasty, and recuperate and develop rapidly, Liu Bang can only leave this hidden danger, so Liu Bang is also doing a preventive measure, that is, those who are not surnamed Liu cannot be kings, that is, to ensure the state of the family and reduce the possibility of confrontation, but obviously Liu Bang is still naïve