C556 The Runes on both Ends

Mu Yue, Mu Han, and the others all saw the changes on the magic circle. They were really scared. Although they were worried, they could do nothing about it. This magic circle was similar to the Blood Altar. It had a long history, and although it was a great defensive formation, they did not know how to control it at all.

Therefore, when they saw the magic circle turn into this state