What is the difference in nature between the abandonment of Vietnam in the Ming Dynasty and the abandonment of Northeast China in the Qing Dynasty?

The nature is actually different. The Ming Dynasty lost Vietnam. Vietnam is an economic place, but it is not. Although the Ming dynasty defeated Vietnam by force, it could not digest this place. The culture here is completely different from that of the Ming Dynasty, so it is impossible to assimilate. Or did Zhu Yuanzhang destroy all the cultures here and immigrate here? But it still cannot be solved. Compared with the Qing Dynasty, the Northeast was originally the hometown of the late Jin Dynasty, where they were born and raised. Losing this land in the northeast is equivalent to losing culture and economy. So this is more serious.

Let's talk about the Ming dynasty first. The Ming Dynasty was a Central Plains dynasty dominated by the Han nationality, and its culture was headed by Confucianism. On the other hand, Vietnam is a minority. During the Qin Shihuang period, there were only a few hundred Vietnamese. If Qin Shihuang had not sent troops to occupy it, the culture and economy there would have been even worse. In the Ming Dynasty, Zhu Yuanzhang listed 15 countries that did not levy, and Vietnam was one of them. This is the economic development of Vietnam, and my culture has developed rapidly. However, the Ming dynasty could no longer conquer Vietnam by force, and even if it did, it could not digest this land. So it is reasonable to lose this land. Zhu Yuanzhang wanted to tell future generations that Mongolia in the north is the biggest hidden danger.

The country 15 cited by Zhu Yuanzhang is well founded. In the Qing dynasty, they didn't conquer, and one of them just made them submit to themselves. Mainly because mountains and seas are separated, it is not conducive to rule after striving to convince people by force. So it is impossible to digest after conquest. But for the Qing dynasty, the northeast was their birthplace. It is the center of their cultural and economic development. Without the Northeast, we will lose our hearts and our homes, which will have a certain impact on our culture.

But also has a certain influence on the unification of the Central Plains. If the northeast defense line falls, the Central Plains will also be affected. It can be said that this place in the northeast is very important. If it is lost, it may pose a certain threat to the Central Plains and is not conducive to its own rule. Fortunately, Emperor Kangxi Qianlong realized this, strengthened the protection of the northeast defense line, and completely destroyed the ambition of the Russian empire. The author believes that the loss of territory is important, but it should also be reasonable. Don't blindly recover lost territory, you must solve your own threats to recover lost territory.