Kapitel 1819: "The End of The Duel"

Seeing the daggers stopped as if being pressed a pause button and the tree roots disappeared, everyone immediately understood that this was the neutralizer technology of the battle arena. 

To avoid emotional fighters from sneaking an attack right after the match ended which would result in a dangerous situation, there was a neutralizer technology that would seal the abilities that were currently shown on the battle venue. 

The neutralizer also made all fighters into Ordinary people as long as they were still within the battle venue zone, but the fighters were also safe from outside attacks because the battle venue also had a special barrier to protect both the fighters and the audience. 

These two-way barriers had two layers, one for the fighters so that outside attacks could not hit them, and the other was a barrier to prevent their attacks from leaving the battle venue. 

The same goes for the barrier around the audience seats.