"The Factory" is a semi-open Secret Realm, containing countless mysterious secrets, with no clear controller. You could even say there isn't one.
Among them, the "Car Factory" is always in a state of high risk, with bizarre giant beasts and machines constantly attacking each other, staging an endless "giant monster movie". The confident ones could even deliver meals to the front door (but those under Silver-tier never came back)... as long as you don't get too close, you can just watch it like a movie.
The "Wine Factory" is more subtle, similar to a treasure trove and trial area. It is relatively safe, and even has "door deities" everywhere to pick up. It is considered a novice area for the locals.
By the way, the Wine Factory does indeed have wine, but it seems that only the locals can consume and drink it. Many outsiders tried it and ended up disappearing.
