Teleportation circles. With a name self-explanatory enough, it could teleport someone to another place within seconds, using the law of space and a formation circle as the medium.

This had been built by a high-level cultivator, one that expertise specifically in the law of space.

This was an extremely valuable product within the cultivation field, a feat so incredible that the average person would never achieve.

They really didn’t expect anyone to be hiding in the Hell Fish cave at the bottom of the pond in this grave.

Dorothy asked, “I wonder where it sends you to? Could this be the exit to this grave?”

Alex shook his head. Since he was more familiar with formation circles and blueprints than Dorothy, he said, “This is a very complicated ancient talisman circle. Besides, it covers such a large area. So I really doubt it’s just used to send us outside of the grave. I think this is a long-distance teleportation circle.”

Dorothy nodded in agreement. “But I think it’s broken. It’s