C2878 Blood Essence Rune

After the two drops of blood were poured into the Eight Treasures Furnace, Zuo Feng finally understood that the fusion of blood essence was not as simple as he had imagined.

Before this, of course, he had already made some conjectures. However, this was the first time Zuo Feng tried to fuse the blood essence of two powerful and rare demon beasts at the same time