Refining blood
"There are so many Blood Crystals!" Feng Yun swallowed his saliva and muttered.
He grabbed a piece of the Blood Crystal and immediately shattered it. He suddenly sucked in red qi that came out from the crystal and a surge of pure blood energy surged into his blood vessels. The powerful blood energy made his blood surge, and an endless stream of life energy surged into his limbs and internal organs. It was as if this Blood crystal had improved the toughest of his blood and bones.
"What a pure-blood crystal, it just so happens that I can upgrade my extreme golden body art!" Feng Yun licked his lips and said.
The blood crystal was a special and rare type of treasure that was very hard to find. Just Profound Fire Crystal that contained fire qi, the blood crystal contained blood qi or vital energy.