"Brother Lin, what's wrong?" Seeing Lin Xuan staring blankly, Mo Mang's expression could not help turning grave.
"See for yourself!"
Lin Xuan sighed and tossed the Copper Essence into his hand. The gesture made Mo Mang pause, and then he fixed his gaze on the Copper Essence.
On it was a dark-red mark the size of a thumb. Though many years had passed, it was still clearly discernible. A cold glint flashed through Mo Mang's eyes; this was plainly some sort of bloodstain.
Apart from that, there were also two deep cuts on the surface of the Copper Essence, clearly left by a spiritual weapon such as a blade or sword.
There was no need to be surprised. Although Copper Essence could be used to refine magic treasures, the piece in his hand was merely material that had just been dug out. Though its hardness far surpassed refined iron, it still could not withstand the sharpness of a spiritual weapon.
Lin Xuan did not say anything more. After a brief hesitation, he continued forward, and after Mo Mang put away the Copper Essence, he quickly followed.
After that, every few steps, they could always pick up a piece of Copper Essence, large or small. Yet the bloodstains and blade marks on them also became increasingly obvious. Fortunately, they encountered no other danger along the way, and at last, the end of the passage appeared before them.
This was a circular cavern. It could not be called very spacious, only a dozen or so zhang square, yet scattered across the ground were quite a few metal ores.
Mother of Profound Iron, Millennium Copper Essence, Earth Spirit Fire Jade...
These were all materials for refining magic treasures. Outside, even if one had crystal stones, it would still be quite difficult to purchase