The structure built out of energy crystals was at least several hundred meters tall. The scale was impressive as well; it was big enough to fit a small town. How did He Lan Yuan even manage to construct such a large and enclosed building?
However, the most surprising thing was this place never once showed up on Earth's satellite surveillance. Xinghe's hypothesis was that they had some kind of signal blocking device.
Sam launched a punch at the wall.
"This wall is rather tough."
Xinghe nodded. "The energy crystals have impressive tensile strength; they are indestructible at least using your bare hands."
"How did they manage to find so many energy crystals?"
"We will find out soon enough," Xinghe answered.
The question then was, how were they going to get in? The entrance Shi Jian mentioned could not be seen. Xinghe had to give Shi Jian another call. With his careful guidance, they finally found the base's entrance.