As the flying boat sailed across the sky, it arrived above Immortal Soldier University.
Zhang Yu looked down at the abyss below, which had a diameter of several kilometers and was bottomless. Rumor had it that this was where many factories deep beneath the university were located.
And the surrounding walls of the abyss were also flickering with countless lights and shadows, with buildings constructed along the rock wall, reaching straight out, almost eager to reach the sky, filling the giant crater with structures built from within the rock wall.
At this moment, lines predicting evil qi pollution appeared in Zhang Yu's vision.
Looking at the Nine Nether Abyss below, Zhang Yu thought that the evil qi pollution at Immortal Soldier University was the worst among all the universities he had visited.
