Luo'er had not calculated how many meters below the ground they were, he just felt it was extremely cold inside, growing more chilling the deeper they went, as if they were entering an icehouse. Despite wearing thick clothing, Luo'er could distinctly feel his pant legs cooling.
The only thing that provided him with warmth was the flickering torch in his hand, which not only offered heat but also served as a warning. It could be said to provide a dual warmth, both physiological and psychological.
Tangmo and the others used lighting devices that were magic crystal flashlights mounted on their shoulders, based on the principle of Rune luminescence. Using a spotlight effect, powered by Magic Crystals, they could provide brightness equivalent to flashlights of the same class, representing one of the localizations of Earth's technology infused with magic.
