For example, when China conducts nuclear weapons research, it is very confidential. At that time, it was in a barren semi-desert area, and it was not until the successful development that the results were announced to the society or the world.
This building should also be engaged in some similar secret research, which is the most likely guess, because from the overall structure and timeline of the building, it should be a very long time, at least for decades, so if we go forward, this building should be engaged in some similar secret weapon research decades ago.
Of course, in addition to this possibility, the following points are also possible:
1, secret intelligence agency
This may also be the stronghold of secret intelligence agencies, because as we all know, wartime information is very important, and if it is accidentally stolen by the enemy, the consequences will be unimaginable, so intelligence agencies must be located in some little-known places. At that time, there was no advanced technology such as drones. It can be said that it is relatively safe to set up secret intelligence agencies in this place.
2. Weapons production
In addition, the production of some simple weapons should be hidden, because weapons are very sensitive topics in our country, and ordinary people are not allowed to hold any weapons, so the place where weapons are produced should of course be kept secret. Even now, few people can know where weapons are produced, so these hidden places have become the most suitable places to produce weapons. There are many similar places, but we haven't found them.
3. Cash production
In addition to weapons, there is another particularly sensitive thing, which is cash. It can be said that cash is not only the most important thing for us now, but also very sensitive. Many criminals know and break the law because of cash, and even risk their lives to break the law. So the place where the cash is generated must be kept secret. It is said that those who produce cash are those who betray the death penalty or life imprisonment. I wonder if this is true.
No matter what this building used to do, it has been abandoned now. Dragon spirit hardly needs treatment in this place, because it is a lonely place, no one will like living here, and it will only leave us some space for daydreaming.