C668 The Liquid on the Groove on the Rock Wall

"This is... the sound of water?"

"To be more precise, it should be the sound produced when water drops hit a rock!"

"Why is there water sound here? Strange!"

"Is there anything strange about it? After all, there is a large river less than a few kilometers away from this cave!"

"That's right, but..."

"Alright, we'll know once we go over there!" Jin Rong said.

"Everyone, pay attention