C1448 Hell Is in Danger

Chu Feng waved his hand and a human-head-sized crystal appeared in his hand.

This crystal was colorless and transparent. It was exquisite and translucent, and it could make anyone who looked at it fall in love with it.

This was Chu Feng's' man-made crystal core '. It was used for breaking through.

There was still a process of comprehension for humans to break through