——(POV third person, Li Huang and others)——
The teleportation system of the fort was created based on Li Huang's plans for it and he didn't set any permanent gate as it was possible for a beast to enter one of them and get around the fort just like that. To handle this they had used portals that would close after you have used them. This way no beast or any wild Jin Fen could get into the fort and move around easily but there is also a slight problem with this method. When you want to open a temporary portal you have to use a bit of time to power up the system and when you get out you can't just walk back because not only it is a one-way transportation method, the portal itself would close fast so there is no chance for changing your mind after teleporting to somewhere, meaning that you have to commit to it.