As soon as he returned to the inheritance palace, he looked for AI and asked, "Can you open the last building? I need to finish this as soon as possible."
"Yes." AI nodded and waved his hand toward the last building, the sphere building.
Alex took a peek and saw a few big translucent crystals sealing a certain book. He thought. 'I wonder which book I need to choose. The suitable one, of course.'
"Please enter the building."
Alex turned around and entered the building. He found five books inside and read their titles one by one. "Inverted Dimension, Space Compression, Space Distortion, Black Hole, and Subjective Reality."
"Damn. They sound powerful… Every single of them. I think I have learned Space Compression back then, but I have never had the time to properly use it. Maybe this one is different and it will be suitable for me?" Alex muttered as he looked at them with a curious face.
