At the Barrier Charm practice field, numerous gun muzzles were installed that would shoot into the room at irregular intervals.
Initially, the bullets were meant to be non-lethal rubber bullets, but given that a hit to a vital spot with a rubber bullet could still be fatal, they were later modified to be even less harmful—liquid bullets.
Furthermore, trainees were required to wear full-body armor before entering, which meant that even without invoking the Earth-Element Sturdiness Curse, there would be no casualties if hit.
But it would hurt a lot.
Some tried enduring a hit without activating the Barrier Charm, and even though it struck the armor without breaking the skin, there were still signs of bruising and contusions underneath. Thus, there was a sign outside the training ground that clearly reminded the students:
[Please activate the Earth-Element Sturdiness Curse before entering]
Of course, even with such clear signage, there would still be those who ignored it.
