Returning the way he had come, Yan Fei moved even faster than when he had arrived. He spent much less time reaching the marked coordinates. Just as Yan Fei entered the coordinates, the Auxiliary Brain transmitted information that Upgrade Essential Items for the Drone had been found again.
After perfectly handling Yang Liu, Yan Fei found himself with plenty of time, so he immediately returned to this place. What exactly was the Upgrade Essential Item? Where was it buried?
The location was 250 meters underground and within a 200-meter radius centered on Yan Fei. Even he was not certain he could check everything in this area, so he had let the Artificial Intelligence "Dream" search the Network World earlier to see if any clues could be found to narrow down his search.
