Chapter 496: Huge Harvest

The Drone suddenly plummeted downward through the descending passage. Yan Fei was first startled, then overjoyed, because this meant he had finally found the vast underground space that lay beneath the Earth's surface, and it also meant the Auxiliary Brain's deduction was correct.

Then Yan Fei's thoughts flickered rapidly, and in an extremely short span of time, he switched the Drone from underground burrowing mode to normal flight mode. He saw the Drone eerily morph in mid-air, instantly reverting to its B-2 shape, and then the Drone suspended itself in mid-air, hovering motionless.

Not far from the Drone, through the massive tunnel the Drone had bored during its underground traversal, thick oil, under immense pressure, gushed downward like an inverted Milky Way, forming a majestic and tremendous waterfall…