章 190: Chapter 190: System's Companions

"Four mana points left at the end of the day," Elio calculated, checking his reserves. "Enough to breathe, drink water, and face any unforeseen event."

As the tunnel grew, Elio made a fascinating discovery. When he sealed the top, a small section of the tunnel inside the wall didn't completely fill with cores.

"Interesting," he murmured, observing how the cores stopped meters before reaching the tunnel's ceiling in that section.

This space became his refuge during rest periods, allowing him to sit on the accumulated cores without fear of being crushed.

To better understand the phenomenon Elio observed in his sealed tunnel, we could compare it to the functioning of a water seal in a modern toilet, although this concept didn't exist in Elio's world.

In a toilet, the water seal is a curve in the pipe that maintains a small amount of water, creating a barrier that prevents gases and odors from the drain from returning to the bathroom. Pure physics.