C2029 Beast Repelling Formation(2)

The more demon beasts he killed, the more crystal cores Ye Fei would be able to obtain. At the same time, he would be able to exchange them for more Yuan Dan, which would increase his cultivation base.

Although the existence of the Beast Repelling Formation could greatly increase his safety, it would greatly reduce his profit, because there was no free lunch in this world.

"Sigh