The shield machine's cutterhead spun rapidly, grinding the Rat Speakers elder's body directly into pulp and scattering it across the ground.
Then the entire shield machine drilled up through the soil below and emerged onto the platform.
It was nearly ten meters long, with a diameter of two or three meters. In Iron Country, it absolutely counted as a colossal monstrosity.
The entire shield machine was covered in toothed rollers that allowed it to move in any direction.
"Click-click... click..." The Geiger counter suddenly began rattling. Shen Feng glanced at it; the reading had reached over two hundred.
This shield machine was powered by a nuclear reactor!
Miniature reactor technology like this was generally used in nuclear submarines. This was the first time Shen Feng had heard of it being used in a shield machine.
Yet the shield machine now seemed like a child who had received a new toy, rolling back and forth over the flattened Rat Speakers elder, coating its gears and cutterhead in bright red before slowly turning toward the surrounding humans.
Like a cat toying with a mouse!
Shen Feng held his breath and stared intently, doing his best to use the Silicon-Based Brain to send out brainwaves and probe the shield machine's operating system.
Only now did he finally understand where the newly excavated tunnels in the subway system had come from.
This shield machine had been digging everywhere, hollowing out the entire underground like an apple eaten through by worms!
It was also because of its existence that Iron Country had been able to keep expanding its territory and become a complete world beneath the ground!
What was driving it?
As the shield machine's probe extended toward him, Shen Feng's expression turned solemn. Every hair on his body stood on end as he prepared