C337 Sudden Attack

Xia Ling had also carefully sensed it before, but he didn't know what kind of array it was. After all, he specialized in the path of the sword, not formations.

Being able to sense this hidden undulation was not because of Xia Ling's high attainments in formations, but it was because his perception was extremely sharp.

Of course, Xia Ling's formation was so high compared to ordinary cultivators