C390 Poor Eyesight?

This gentle call caused Xu Lin to tremble.

The sound came from behind him. He was right behind him. He was in the middle of the stone paving. Not far in front of him was that strange stone. There should have been no one behind him.

But where did this sound come from? Why did it suddenly appear behind him?

Xu Lin's spirit energy surged as he activated all of his defenses