C173 Mountain Stream Cave (2)

At the back was the exit of the mountain stream. However, it was surrounded by black air and the dense, dark air didn't seem to be a good place to be.

As for the inside of the mountain stream, there did not seem to be anything special, but on Chen Feng's right, there was a hidden cave.

If he did not use his Spiritual Sense, it would be impossible to detect, because outside of the cave