Drilling more than a thousand kilometers underground required extensive preparations, such as advance testing.
A super-pressure apparatus was designed and manufactured. Chu Fei entered the pressure vessel to experience extreme pressure and test his limits.
But before that, Chu Fei went into seclusion for several days and forged himself a brand-new Hyper-Dimensional Metal longsword. Nanofluid Metal was good as well, but its strength lay mainly in its "versatility," whereas this longsword was built with "specialized technology."
General-purpose technology had broad applications, but it could not be pushed to the limit in any single application. Even Hyper-Dimensional technology was no exception.
To push a certain technology to its limit, one could only choose specialized technology.
Before entering the pressure vessel, Chu Fei prepared for the worst-case scenario—what if someone tried to trap him inside?
It might have been a touch of paranoia, but this vigilance was how Chu Fei had made it this far.
In the overall environment of this apocalypse, one must never gamble on human nature. The stakes were too high.
The pressure vessel was designed to withstand three hundred thousand atmospheres.
One atmosphere was roughly 0.1 megapascals. Three hundred thousand atmospheres meant thirty thousand megapascals. What did thirty thousand megapascals mean? A waterjet cutting machine, at its maximum pressure of 420 megapascals, could already slice through metal with ease.
To achieve thirty thousand megapascals, the vessel walls were seven meters thick. It used specialized metals—not Ultra-Pure Iron, since that would have been far too costly—but technologies such as nano tungsten steel, while the outer shell incorporated carbon fiber and more.
The entire vessel had a flower-like structure. At its center was a spherical chamber ten meters in diameter, though its internal space was only three meters across.
Connected around it were eight thick steel pipes, and each pipe