C645 I'm Afraid of Pain

It was really difficult to get such a mysterious formula when everyone was in despair.

But soon, a new question arose. Then, who was the person who had shot this headless arrow?

At the scene, other than Gu Feng and Jing Jing, no one knew the answer.

Others might not recognize this headless arrow, but Gu Feng and Jing Jing Jing had seen it before