On the land of the third layer, more and more bases, laboratories, and strongholds surrounded by space barriers began to appear.
These strongholds of the Righteous Alliance, encircled by space barriers, greatly enhanced their defensive capabilities, like nails being driven fiercely into the ground.
...
Within the Spirit Realm Space.
Divine Monarch Nie Lian of the Sky Demon University snorted coldly and said, "Now, breaking through one of the opponent's strongholds consumes a lot of resources. The more we fight, the more we lose. How can we continue the war this way?"
Bloodfall Divine Monarch nodded in agreement, "If we don't solve the problem of the space barriers, we'll be forced to gradually withdraw from the territory we currently occupy, possibly retreating from the third layer to the second layer... and eventually back to our own universities."
