Zhou Chuan handed over an opened storage bag. You Li took it and looked suspiciously at the contents.
"A Monster King's Monster Core!" Seeing the monster core, she couldn't help screaming.
A peak sixth-grade monster core, which was what Zhou Chuan called a top-grade monster core, belonged to a Monster King's origin core. They were extremely hard to come by and could only be found among the Three Sects. This was because the Monster Kings of the Mainland were basically captured by the Three Sects and kept in captivity as pets. As long as the method was proper, the monster core could regenerate even after being extracted.
Chapter 856