The Western Frontier Death Line was not a horizontal, linear defensive line in the traditional sense.
Instead, it was a roughly circular cluster of fortified strongholds surrounding the Abyss Passage, with a total circumference of nearly three hundred kilometers.
Hua Nation and the Arctic Alliance had divided this "circle" into eight equal sectors.
The due-west, northwest, and due-north sectors were defended by the Arctic Alliance.
The northeast, due-east, southeast, due-south, and southwest sectors were defended by Hua Nation.
Xifeng Pass had narrow eastern and western entrances, while its northern and southern wings were embraced by mountain ranges. Its interior terrain was low and flat, making it look at first glance like a small basin among the mountains.
Before the Rift fell, the two nations had already used permanent fortifications to seal off the eastern and western exits.
Later, still feeling that was not secure enough, they had relied on the semicircular mountain formations to the north and south to build a large number of fortresses.
During the initial stages after the Rift was lost, these fortresses helped the two nations withstand the Abyssal Monsters' assault.
Over the course of thirty years, humanity had continued advancing through fortifications toward the Abyss Passage at the center of the "basin."
That had created the defensive layout Li Wei saw today.
These common facts had all been chattered to Li Wei by the soldiers of 1st Company along the way.
By now, their impression of Li Wei had changed greatly.
After all, even though they knew Li Wei was a Martial Artist, she was still a young woman who had carried three thirty-five-millimeter autocannon barrels and a bulging military backpack.
She had made the entire journey over mountains and across ridges with the unit, without using any exoskeleton assistance and without so much as