C493 Phantom Shadow Killsword Ghost Sword.

The killing intent was faintly discernible, like a ghost behind a person. When you turned around, it did not exist, but when you let go of your guard, that cold feeling would come again.

This was what Yan Yun felt at this moment, but his reaction was different from ordinary people. He was a martial practicer, and furthermore, he was an accomplished martial practicer. So