The Border Area's spatial structure was quite unique.
Some were embedded, expanding Blue Star's area out of thin air. Such Border Areas were usually permanent. They did not appear too suddenly, either, but grew slowly and gradually merged with the overlapping space.
Others were folded, sloped, portal-like, or alternating.
This Border Area on the outskirts of Jiangbei City existed in the form of a "slope." It could only be entered from this side. If one approached from any of the other sides, forget about passing through—even seeing the Border Area's shadow was difficult.
This Border Area sloped downward toward Jiangbei City, which was why so many monsters had poured directly into the urban district.
"Still, according to the news from the rear, most of the monsters that slipped into the city have already been eliminated. The urban district is basically safe now. Their speed... was quite a bit faster than expected."
"Did some powerful expert happen to pass by?"
The vice president of Jiangbei City muttered, looking much more relaxed.
His body was spattered with the blood of many monsters. Farther in lay the dark, gloomy Borderland, where only the vague outlines of the mountain peaks could be seen.
A defensive line had already been set up behind him. All kinds of guns and artillery were arrayed in formation, their dark muzzles aimed into the deep darkness ahead. Brilliant flames tore through the darkness and fear inch by inch.
Many elite soldiers also stood ready, prepared to kill the monsters surging out from within.
"Since the rear is already safe, no matter what, we have to hold this defensive line."
"Dawn is coming soon."
On the outskirts of the city, Mu Yuan recalled Lu Liu's team and Uta and Niu Si's team one after another, teleporting them back to