378 Deadly Fog

As if thousands of thunder shocks were bursting out under the ground, the earth was shaking violently. The drilling machine that the demon clan built up rose up a little bit at first, before it was pulled down and exploded in cracking noises.

Then, a cluster of high-pressure fog erupted from the hole and broke out in the sky into thousands of pieces of ice.

"Not good. A frigorific cyclone!"

Hong Tong's voice was somewhat hoarse.

They did not know that the demons were drilling in this place just to get a frigorific cyclone out.

They'd witnessed the power of frigorific cyclones with their own eyes the other day. A battleground of more than ten square kilometers could be entirely frozen by one of them. It was extremely tricky for Building Foundation Stage Cultivators such as themselves to cope with them.

The question now was how big the incoming frigorific cyclone would be.