The deeper they went, the denser the spiritual energy became. Not long after progressing, they saw the translucent spirit crystals on the cave walls, signifying that they had entered the area of the spirit crystal mine.
The spirit crystals in this section of the tunnel hadn't been mined, and the quantity of spirit crystal stones was limited.
Every so often, a moonflower stone was embedded in the cave wall, casting a faint silver light that illuminated the tunnel.
Through the tunnel and into a vast underground mine, at the entrance on the left, stood a pavilion built entirely of spirit crystal stones, from where one could overlook the entire mine.
Inside the pavilion, a middle-aged man sat with his eyes slightly closed, in the midst of cultivation, drawing the thick spiritual energy towards him.
