Soil surged from a metal pipe as thick as a water tank. By then, the few contractors had vanished, all of them leaping into the hole in the ground.
Su Xiao reined in his aura and approached the hole, looking down. It was at least five meters wide, slanting deep underground. Faintly, he could still hear that demonic laughter.
Su Xiao had long since lost count of how many times he had fought contractors from Apocalypse Paradise. He had once created demon beasts to besiege them, and he had also been surrounded by them as an overlord-level final boss—or rather, he had chased after a group of people and hacked them apart.
This was the first time Su Xiao had encountered contractors from Apocalypse Paradise mining. If one called them cowards, they had still dared to mine beneath the walls of Arlans City. For a city, that level of hostility was comparable to digging up someone's ancestral grave.
Crack~
A crisp sound rang out. Su Xiao looked toward the city wall ahead. Several cracks were spreading across it, while the nearby soil had already piled up more than ten meters high.
"Baha, keep an eye on the surroundings."
"Got it."
Baha flew high into the sky and began keeping watch from above. The ore was already a benefit almost within reach, so Su Xiao naturally had no intention of giving it up.
One hundred and fifty-seven meters underground, three drilling robots were operating at full power. The remaining two had fully extended themselves, supporting the soil above to prevent a collapse.
A metal pillar stood in the center, slowly releasing oxygen while detecting poisonous and harmful gases, nearby energy fluctuations, and so on.
Clang, clang, clang...
Clear tapping sounds rang out. Mining rare minerals was not as simple as one