The materials stored inside the warehouse consist mostly of guns and ammunition. Judging by their appearance, these firearms and ammunition seem to be very old, and they are outdated compared to modern weapons. Based on the intelligence gathered by the artificial intelligence "Dream", Yan Fei discovered that these firearms closely resemble the ones used by Japan during the Invasion of China period.
However, due to poor storage, these firearms have started to decay and their appearance has changed, rendering them obviously unusable. Thus, what truly caused Yan Fei to break out in a cold sweat wasn't these scrapped firearms, but the densely packed and huge large-caliber naval artillery shells stored in the warehouse.