A concentrated roar came from the reinforced concrete building, as if two prehistoric beasts were fighting inside. The modern building, which was dozens of meters tall, kept shaking like a toy that was destroyed by a naughty child.
White frost visible to the naked eye spread on the surface of the building. Not far away, Li Rui and the others felt that they had come to the winter of Siberia. The bone-chilling cold hit them in the face and penetrated through their thin clothes into their bones.
Fortunately, none of the people present were mortals. Their qi and blood circulated rapidly, and their bodies became hot, expelling the gangrene-like cold.
However, if an ordinary person stepped into the battlefield, just the cold outside would be enough to freeze them to death in a short time!
Frost spread on the ground, and the building trembled more and more violently. The sound of breaking bones that made people's scalps numb was deafening.
