Around the Naqdal Continent, a large cluster of drone bases was taking shape.
Sentry turrets had replaced the drone turrets and early-warning towers, which were previously erected to guard against the second wave attack of the festered monsters. The new, silver-gray space structures floated like monuments in space, each installed with guns of different sizes and missile launchers. The powerful shield generator on each sentry turret could cover a wide area. The precise placement of these sentry turrets ensured that shields would overlap each other to form a large group of staggered shields. This technique, adapted from the Xi Ling military technology, had been simplified and widely adopted in various cluster-based forts and bases around the macroworld.