What was the reason for the wicker border crossing in Qing Dynasty?

If you look at the map of the territory of the Qing Dynasty, you will find that there are two lines that form a "human" shape on the northeast land, which is the controversial "wicker edge". So, why did you build wicker edges in the Qing Dynasty?

First of all, in the view of Manchu rulers, Northeast China is their "prosperous land", and in order to prevent its "Long Mai" from being destroyed, it must be controlled and banned.

In order to prevent people from crossing the wicker border into the northeast without authorization, the rulers of the Manchu Dynasty opened a gate at intervals along the line, which was called a "side gate", and at the same time set up checkpoints, stationed troops and implemented militarized control.

For people at that time, this wicker edge was a red line and a minefield. It is illegal to cross without taking the side door and will be severely punished.

Secondly, the specialty products such as ginseng, mink, velvet antler, Oriental Pearl, bighead carp, pine nuts, hazelnut, etc., which are needed by the royal aristocrats who monopolize the production in Northeast China, and the paddock for collecting offerings every year and hunting when the emperor goes out on patrol.

The wicker border crossing completely blocked the livelihood of people who dig ginseng, hunt velvet and collect mountain products, which brought great inconvenience to the border people. For example, in Changtu area in northern Liaoning, there was no county seat at that time, and people were used to doing business and shopping in the original place. However, after being repaired by wicker, they could not go straight. Walking more than 230 miles to the west around Fakumen and dozens of miles to the east around Weiyuan Fort Gate, the people complained bitterly.

However, the emperors of the Qing Dynasty were proud of it. Every time they come to the northeast to worship their ancestors or patrol the mountains, they will stop by the wicker, taste the masterpieces of their ancestors and write poems to recite.

However, due to the continuous influx of immigrants from outside the customs, it was abandoned and disrepair, and the wicker edge was useless. In the twenty years of Daoguang (1840), reclamation was forbidden in the northeast, and the wicker edge was completely abandoned. At this point, the Qing government abandoned the wicker side wall in the tenth year of Xianfeng (1860) for the purpose of developing the Northeast, increasing tax revenue and alleviating the land contradiction, which made it go into history, thus opening a new era of migration to the Northeast.