The digging never stopped.
Room after room took shape, with crash after crash ringing out from the Crystal Wall.
They were gradually burrowing deeper into the Crystal Wall.
"We're through!"
Preaching's voice rang out.
Xu Yuan immediately sped toward the innermost room. Sure enough, beyond its far end lay an endless dark Emptiness.
A universe!
They had really dug through to another universe!
He stood at the entrance without extending his divine sense, sweeping the area only with the perception of an Immortal Species.
"Something seems off. There's no powerful being here, and no universe either. Just the thoroughly decayed corpse of an Ancient God."
Xu Yuan shook his head.
Worse, the entire Emptiness was collapsing at an almost imperceptible rate.
In a few tens of billions of years, perhaps it would cease to exist.
Xu Yuan stepped back.
The room vanished with him.
The Cube heaped the broken Crystal Wall fragments there, sealing the opening.
"It's fine. Let's try another direction. Keep going!"
Xu Yuan waved a hand.
A continuous series of impacts rang out around him as rooms expanded.
Clearly, under the Iron Gate Universe's control, the Cube was extending in other directions.
With the matter weighing on his mind, Xu Yuan found a room there and sat cross-legged to rest and regulate his breathing.
Time passed slowly.
Half an hour later.
Preaching's voice sounded again:
"Go 2.9 billion kilometers to your left. You'll find a room with a balcony. A Crystal Wall has appeared there. It's thin—we're almost through."
"Got it!" Xu Yuan answered and vanished on the spot.
He appeared directly in the room with the balcony, 2.9 billion kilometers away.
Sure enough, fine cracks had already spread across the Crystal Wall beyond the balcony.
He waited a few more minutes.
Crash!
The Crystal Wall shattered.