Actually, if it were just the sudden formation of a mountain, Gu Tao wouldn't be so surprised. What really astonished him was that he had detected only kinetic energy reactions and didn't sense any other fluctuations, as if this were a genuine geological change.
But clearly, it wasn't. He watched it happen with his own eyes, and besides, a geological change couldn't just start and stop at will, there would always be some signs. How could it be so sudden?
By all conventional understanding, regardless of the kind of change, there should be energy transfer and interaction, whether it's leveraging a small force to move a heavy weight or a direct exchange of forces. But what he had just seen was a completely clueless energy reaction, one that violated the laws of the universe.