Under the scan of the Quantum Radar, Yan Fei clearly discovered that the Storage Warehouse was entirely surrounded by hard rock layers, making it impossible for outsiders to enter the Underground Storage Warehouse through these hard layers. This was the reason the United States had not built any alert structures on the surface above the Underground Storage Warehouse. In their view, aside from the constructed passage, no one could enter the warehouse in any other way, so there was no need for special defense measures.
Once the target location had been confirmed, Yan Fei immediately controlled the Drone to descend into the Great Gorge. The base of the Great Gorge was very narrow, incapable of accommodating the massive body of the Drone. As soon as the Drone landed in the Great Gorge, Yan Fei switched it to underground burrowing mode.
