C781 Magic Breaking Mirror
When Ning Cheng first asked Xu Tianyu to join them, one part of it was to see Xu Tianyu's ability.
The second aspect was the chess piece Xu Tianyu had placed next to Lee Yingguang. As long as they acted together, they could easily deal with Lee Yingguang's forces.
"But we still have one thing to take note of. Master Tianyu, you should have heard of the Nightmare Tooth