There are so many colossal shells in the secret warehouse, continually corroded by the air, with some explosives exposed to the air. Even a tiny spark could ignite these explosives, causing all the shells to undergo explosive disintegration. For safety reasons, Yan Fei decided not to use any open flames like torches in the secret warehouse this time, and he even refrained from using electrical devices, let alone any metal items, fearing an accidental detonation of the bombs in the warehouse.
After making preparations, Yan Fei took a deep breath and jumped into the river ahead. In Yan Fei's mind, a 3D map displayed an indicating arrow; by following this arrow, he could enter the secret warehouse. Meanwhile, the Drone Quantum Radar hovering overhead performed a precise quantum radar scan of the secret warehouse every few minutes, monitoring any changes and ensuring that nothing went wrong during this mission.
