Just as a whole troop of men came charging into the inner region of the base, a vaguely transparent white screen suddenly rose from Owl's Sanctuary, enveloping the entire base from within.
This white screen was called a large communications inhibitor, able to create high-density spatial interference waves that inhibited any communication signal within the covered area, preventing transmission, thereby isolating the universe at large from contacting anyone within the base, and vice versa.
"Follow me! The heart of the base is on the top floor. Let's charge in and capture Scar alive," Ning Baichen exhorted with his two arms raised.
The paths in Owl's Sanctuary were in a spiral, going from the dock at the very bottom all the way to the command center on the highest level, so they required people to climb quite a long distance which comprised sixteen floors.