As they reviewed the materials, Jiang Yan Hai's plane landed smoothly at a temporary airfield nearby. They were still several dozen kilometers from their destination.
The passageway into the secret base was already being widened again. This expansion was inevitable, and the facility was also beginning its second round of reinforcement.
"According to the current assessments, the plan is to build upper and lower rail lines. The standard width of each train car is 3.1 meters. If the distance between two trains traveling at a certain speed is kept at one meter, then a width of 7.3 meters will be needed."
"The Teleportation Gate currently has a diameter of eight meters. Logically, that is enough, but we can't use the entire space for railways. There must be at least one road beside them that allows vehicles through, so the diameter should ideally be doubled," Black Hawk said.
Jiang Yan Hai nodded silently. Double meant a diameter of sixteen meters. In reality, a sixteen-meter diameter would allow the transportation of nearly all supplies. Especially since an eight-meter diameter was already enough to build two rail lines, one in each direction. For transporting materials alone, it would definitely be sufficient.
But it was not that a sixteen-meter diameter could not be achieved. Rather, the entire base would have to be redesigned, new load-bearing pillars erected, and all the existing levels of the base opened up.
Otherwise, it definitely would not be able to hold. Building the railway would not be easy either, but those construction matters depended on how things were carried out later.
If this was exposed and the outside world learned about it, things would become much simpler. They could just dig through the mountain.
Although the base was located inside the Qilian Mountains, the nearest point to the plains