Zhou Hao pondered seriously. Just as the frog had said, any one of these treasures was an existence that would invite death. However, all of them were his favorite. "I can't bear to part with them." Zhou Hao hurriedly shook his head.
"There are clearly some very profitable ways of earning money, but you just can't see them. In the words of you humans, they're so close yet so far." the frog said.
"You're saying… could it be? That's impossible, right…" Zhou Hao replied in surprise.
"That's right, I'm talking about the Underground City in front of you! Look carefully at these houses made of essence iron! These are even more valuable than the alloy remains of the spacecraft outside. In fact, those alloy remains are useless compared to these essence iron. After all, essence iron is a raw material that can be used to make tools, guns, ammunition, defense, and other heavy industry fortifications."
