C2512 They Slaughtered Their Way into the Ten Thousand Ruins Realm!

This place was set up by experts who laid down a formation that tightly covered the entire entrance to the realm. Anyone who entered would step right into the formation. They controlled it, and no matter who came, they could use its power to eliminate everyone here. Moreover, they themselves were formidable, even without the formation. And they weren't just a few; there were dozens of them