Means
The two of them had stepped back behind at the entrance of the valley.
"Wait, so the lightning is passing through the ground?" Kane raised an eyebrow. "How is it passing through solid ground?"
Rui had long known that esoteric material science was quite developed in this world due to the presence of many fascinating esoteric substances that could do things that defied logic.
In turn, a holistic and theoretical understanding of the more natural and day-to-day phenomena had taken much of a backseat, compared to Earth. It made sense that Kane did not know what lightning was constituted of, and how it moved, given that electricity was not really something that was a well-known phenomenon that was used widely. Rui highly doubted this world had come up with Maxwell's equations.