C246 Purple Pyroxene

"These stones are called Purple Stones, and they were born along with Profound Crystals. They are called the hardest materials."

"This purple firestone was originally invulnerable. Later on, our Demonic Beast lineage discovered that we could use our own blood to soften this purple firestone."

Seeing the surprise on Ye Feng's face, Han Bing Hu kindly explained