C679 Body at the Base of the Cliff

She raised her head and looked up. She felt the sound of water flowing down from above. Could it be that this was the dark river?

Dr. Xu turned his head and looked at her. Seeing that, he said proudly: "You are right, this is the so-called underground river.

They've left the secret passage here, and no one would have guessed it. "

They? Who are they?

Zhang Qiao had a question in her mind