C888 Frost Invasion

"Of course, this is only my speculation based on the increase in the coldness. It might not be completely the case. Practice can verify the most accurate number." Cang Song smiled.

"I know." Nangong Fan slowly paced in the spacious tunnel.

Now that the coldness was no longer a threat to the two of them, they naturally did not need to be too nervous. It was just past noon