Defied Fortress, Southern Region.
The Magic crystal lamp previously set at the end of the corridor was still functioning well, its constant bright glow dispelling the darkness in the corridor, allowing Soldrin to slightly relax.
The Magic crystal lamp set in front of the Shadow Testing Grounds was not just for illumination but also served as a "detection device" — this Magic crystal lamp relied on a special set of Magic Web Units for power, with magic symbols to detect unusual surges in Magic Power. If the concentration of magic in the surrounding area changed suddenly, the Magic Web Units would immediately burn out, and the lamp would go out as a result. The subsequent exploration team would thus receive a pre-warning, and since the lamp was still brightly lit, it at least indicated that no unusual surges in magic had occurred in this area since Soldrin and the others left two days ago.
