The Abyssal Sea Research Department certainly lived up to its status as an institution directly subordinate to the research institute. Whatever technology its shelter used, even Prince, an S-rank powerhouse, could not immediately break down the door and force his way inside.
But with every attack Prince made, the entire room shuddered, and its lights dimmed a little more.
Clearly, the room was not completely indestructible.
By the look of things, it would not be long before Prince broke through.
Outside, Prince noticed this as well, and his voice grew even more arrogant and smug:
"You can't hold out much longer. Why not open the door and surrender now? I promise to make it quick!"
"Heh, do you regret refusing to help me research Relic advancement back then?"
Boom!
His words had barely faded when the entire room shook violently, as though it would fall apart at any moment.
Fortunately, it held out in the end.
"Whew!"
Amid the spatial turbulence, Lin Yuan wiped the cold sweat from his forehead.
He had just tried to open a spatial hole leading to Mei Qian and the others, but perhaps because the shelter on Mei Qian's side had spatial reinforcement, he had failed to succeed on his first attempt and instead weakened the room's spatial stability.
As a result, Prince had nearly smashed through the shelter's door with a single blow.
Fortunately, the shelter had ultimately stabilized.
Outside the door, Prince clearly had not expected his strike to suddenly have such a powerful effect either, and froze for a moment.
Taking advantage of this opportunity, Lin Yuan tried again and finally opened a spatial hole.
"Zero?! How did you..."
Mei Qian and the others were all astonished to see the spatial hole that had suddenly appeared, and Lin Yuan's face on the