There are three reasons. First, Changbai Mountain is regarded as a holy land, because Changbai Mountain can be said to be the birthplace of the Manchus. We all know that ancient dynasties attached great importance to dragon veins, which often involved the country, the country, and the country. , so the ban was also due to the fear of being destroyed; secondly, the strategic location was very important, because they were worried about collusion between the Han people and foreign ethnic groups such as Korea, which was also a major reason; and the last word was political, because at that time, the Manchus banned not only Changbai Mountain, but also Most of the Northeast was worried that the remaining forces of the Ming Dynasty would sweep in, so sealing off the Northeast also gave them a way out.
We all know that the Qing Dynasty has banned the entire Changbai Mountain since its establishment. At that time, Han people were strictly prohibited from entering. The main reason was that before the Manchus swept the Central Plains, they still belonged to the Later Jin Dynasty. At that time, their base was in the northeast, and Changbai Mountain was precisely within the northeast, so the Manchus regarded Changbai Mountain as their birthplace and the holy land in their hearts. It can be said that after the Manchus established the Qing Dynasty, They even regarded Changbai Mountain as the place where their dragons flourished, and believed that Changbai Mountain had dragon veins. It can be said that the ancient feudal dynasties basically believed that the dragon veins were often related to their country, mountain and country, so in order to prevent the dragon veins of Changbai Mountain from being destroyed, they created Changbai Mountain will be banned.
The second thing is the geographical location. In fact, the Qing Dynasty banned not only Changbai Mountain, but most of the Northeast region, because there are two main points. One is that the products of Changbai Mountain can be said to be extraordinary. It is rich in resources with many precious animals and plants, which can be said to be very precious. Another reason is that the Northeast is close to Mongolia and North Korea. It can be said that the strategic location is very important. The Manchus closed most of the Northeast because they were worried about the Han people. They colluded with foreigners to shake their dominance. On the other hand, they wanted to make the Northeast a royal back garden, so they banned it.
The final issue is nothing more than a political issue, because the closure of Changbai Mountain and even most of the Northeast was mainly to avoid worries, because in the Ming Dynasty, although Beijing was the capital, Nanjing was also the companion capital at that time, so it was full of On the one hand, people were also worried that their regime would be overthrown, so they banned the entire Northeast with the intention of creating a capital-like existence so that they would eventually have an escape route to choose from, so Han people were not allowed to enter at that time.