C973 Defensive Treasure

Boom!

Before Chu Yang could react, he felt the black stone suddenly explode, and a ball of black light rose up, enveloping Chu Yang's entire body.

"This is …"

Chu Yang looked at everything in front of him and felt that it was a bit unbelievable. This was a formation that covered dozens of meters in area, and the entire range of the formation was covered in mysterious patterns