Xiang Shan quickly confirmed two things.
First, technological advancement was indeed very significant. At least the battleship outer armor from two hundred years ago was no match for the modern sonicon blade, not even as sturdy as wood.
All it took was a gentle touch, and the sonicon blade would leave an ever-extending cut on the battleship outer armor.
The battleship outer armor from two hundred years ago simply didn't account for defense against sonicon blades.
Secondly, there really was nothing here.
According to Yuki, when he unearthed Xiang Shan back then, it was through drilling into a narrow space resembling a ventilation duct or something of the sort.
For Homo sapiens, this was a highly dangerous operation. Recklessly diving into confined spaces, one could easily die from lack of oxygen.
Although Yuki's physical body proportion was quite high at that time, he was primarily able to climb out using the prosthetic body of his limbs and feet.
