C830 Avenging Grace and Enmity?

If they were really in the underground world, they wouldn't be able to help much with the size of the Black Giants. After all, other than the "aerodynamic wave", the rest of their abilities might just be Qingming Dream's control, but the "aerodynamic wave" isn't a permanent combat ability and it doesn't seem to be of much use to the red-robed men. Because if it was