A Plane Passage was, in essence, a corridor connecting the gateways of two planes.
Such a corridor sounded like an extremely narrow place, but in reality, it was immensely vast.
One had to know that the distance between planes far exceeded the diameter of a universe—sometimes even several universes' diameters. As for its width, it was also much greater than the diameter of a starfield. If a Plane Passage was not wide enough, it could easily collapse.
This was especially true for two planes of different grades. It was like a water pipe with one end connected to a huge tank and the other to a small wooden barrel. At the same height, water would flow backward from the tank into the barrel because the water pressure in the tank was greater.
The same applied to planes of different grades. Due to the differing concentrations of energy within them, traveling through a Plane Passage from a Basic Plane to a Higher Plane meant sailing against the current.
This countercurrent reduced a spaceship's speed to less than one-third of normal. Moreover, because the space within the Plane Passage was unstable, spatial jumps were impossible here, let alone long-distance spatial teleportation.
Gu Ding and the others could only obediently follow the fixed route designated by the Federal Government.
"Under normal circumstances, traveling through the Plane Passage at maximum speed would take us around fifteen days to reach the end. But now that the spaceship's speed has been greatly reduced, we'll need about fifty-two days. The Federal Government also warned that anyone below Heaven God Level Combat Strength cannot survive here for long. Furthermore, the planets here have long been scoured by energy leaking from the Higher Plane. Their environments are extremely harsh, so there are no supply points within the Plane Passage—not