Research.

Valerian moved and retreated to create a distance between the two. He looked at Tut and the other party looked at him, and said, "You are strong, but this is not enough to kill my thousand brothers." 

The silver-haired boy shook his head and said, "You think too much of yourself, let me show you what is my true strength then." 

That said, he raised his hand and without an incantation he cast wind blades, although Tut was strong and could sense the attacks coming at him, but the cut in the tendons have made his movements flustered. The wind blades were not following a straight line, but they moved in the void and left gashes on the other tendons on the body of the Valkyrian grandmaster.