C305 Innate ability mirror

"Boss, why do I feel colder than before?"

The few of them descended along the cavern of regret for a full four hours. However, they had yet to reach the end when the crystal wall around them began to emit a terrifying cold aura. Within the crystal wall, some tiny vein-like lines could faintly be seen.

The tunnel was wide enough to accommodate four or five people. It was quiet inside