C2733 The Contents of the Sarcophagus

Sin Heaven and the others were all very surprised.

"How do you know all this?"

They were all looking at Niu Thirteen in shock, curious as to how he knew what was inside the sarcophagus. After all, so many people didn't know what was inside the sarcophagus, so everyone thought it was a rare treasure.

However, Niu Thirteen had told them that there were terrifying creatures inside the sarcophagus