The first wave of explosions was only to crack open a gap, so the sound and the following tremors wouldn't be too big, and could be covered up by that one strike from Optimus Prime.
But the second round of explosions was different.
This was a sustained chain of blasts. Not only would the detonated charges blow up, even those Spirit Stone mines buried underground would start exploding one after another.
Especially since this was an uncontrollable explosion—meaning Lu Xiaobu had no way to know exactly when each blast would go off.
Not only that, once the second explosion kicked off, this whole area would start separating from the main island, and the people standing on it would definitely feel something.
Normally speaking, that feeling should be no more than a mosquito dancing on the deck of a big ship, hardly noticeable.
