C137 Earthfire Dragon Vein

There was almost no light in the dark tunnel, and Chu Feng could only see within a few meters.

Under Xiao Lee'er's guidance, Chu Feng and devilish child didn't feel worried at all. They believed that Xiao Lee'er's reaction was absolutely correct. At least, they wouldn't encounter too much danger while travelling forward through this tunnel.

After an unknown amount of time