Chapter 345: "You really gave us a big surprise."

"The planet is hollow inside?"

Scar Dog frowned and asked, "Are you sure?"

"Yes."

Howard Lee nodded seriously and replied, "To be more precise, I am not sure if the entire planet is hollow, but at least the city beneath our feet is, and that much I can confirm."

"Not to mention... there are indeed many mechanical products hidden in there."

"You've given us quite a surprise."

Scar Dog's eyes narrowed, and he grinned, "It seems like we've found the way to break through."

If the planet was truly hollow and filled with various mechanical structures, then things would get interesting.

First of all, this wasn't something natural. Natural machinery was a bit far-fetched.

Since it was human-made, it would require considerable power to achieve this feat.

Based on their current intelligence.

The only two powers capable of doing this were the Federation and the power behind the "Sky Domain" game.

Either of these powers would be highly beneficial to them.

"Let's go."