In the minds of the common people, hard body skills were just for taking a beating, and the way of attack was very simple.
Under normal circumstances, the main attack method of a hard body skill cultivator was to use their hard body as a weapon. After all, a qualified hard body skill cultivator's physical strength was not much weaker than alloy steel.
Breaking the surface with a single point, coupled with some methods of exploding qi and blood or true essence, the power was truly terrifying.
However, in the end, it was only a single target attack. There were very few group attacks.
A person's energy was limited. At most, there would only be hard body martial arts practitioners who would learn some sound wave martial arts to barely make up for their shortcomings.