Ten minutes later, after flying over 60 miles deeper, Zhang Tie suddenly felt entering a deeper basement by staircase as a bizarre underground space appeared in front of him.
This underground space was much smaller than the former one; however, it still covered about 6,000 square miles. When Zhang Tie saw this underground space, he was shocked so much that he almost cried out.
The entire underground space comprised of an integral piece of metal as same as that he saw before. Actually, Zhang Tie was more stunned by the shape of this space rather than its component.
This underground space was completely in the shape of the space inside the All-spirits Tower of Great Wilderness Sutra that he cultivated.
The entire space was composed of five facades, each of which was a metal wall as high as 30,000 m. Additionally, each wall was covered with a myriad of still vivid totems and images of animals and mutated beasts like reliefs.
