Inner Cosmos, Alchemist Island, in the Pollution Zone of Steel Forest of Mortal World.
30 kilometers below Ground Level, a large group of Death Steel Soldiers wearing power armor were chiseling the ground with their powered tools.
The constant clinking and clanging of machinery roared everywhere, yet the sound of stone cracking under the drill was seldom heard.
Beneath the feet of the Death Steel Soldiers, the ground was a flawless, seamless, unwrinkled smooth crystal barrier.
It was as vast as the Earth itself, tougher than a diamond drill, not only possessing an incredibly astonishing hardness but also capable of slowly self-repairing, filling every scar left by the drills.
"Bang! Bang!"
Explosive loud noises.
This was the sound of heavy equipment striking the ground with large metal hammers, yet the crystal ground remained completely unscathed.
"Whirrrr—"
