After the Manchu entered the customs, a large number of people were recruited to reclaim Changbai Mountain. Why was it that the mountain was closed and not allowed to enter casually?

It's like calling a bunch of workers to help you build a house. When the house is finished, will you let people into your house? So at that time, after the Manchu entered the customs, a large number of people were recruited to reclaim Changbai Mountain. After the reclamation, no one was allowed to go in again. After all, Changbai Mountain was the land of Long Mai for the Manchu at that time, which was related to the fate of a country and a sacred place of a country, and it was not allowed to be defiled.

In fact, there are many other sayings. For example, some people say that this is the back way for Manchu to stay, because at that time, Manchu kept a distance from Han Chinese actively, and it was stipulated that Manchu and Han could not marry, so it was impossible for them to reach an alliance, so sooner or later, they would have a war, and then there would definitely be a losing side, so Changbai Mountain would be the last retreat at this time. Even if you fail, you can return to Changbai Mountain, and then wait for the opportunity to make a comeback. The so-called 3-year Hedong and 3-year Hexi, even if you go through the regime change, you can get away with it, and there is a secret place to start over.

But there are other sayings. For example, this is where Long Mai is, and no Han Chinese can enter it, polluting this place. Just like those costume dramas we are watching now, those rich families have a place similar to a holy land, which is not only their belief, but also a place where they can hide when they are in danger.

However, after all, Changbai Mountain belonged to Manchu territory at that time, and certainly no Han people were allowed to enter it easily. Therefore, after the reclamation of Changbai Mountain at that time, the mountain was closed and no one was allowed to enter it casually.