There are only two ways to stop a fight between two contestants. The first is if the referee, a girl from the Cross Family, intervenes and personally stops the fight. The second is if one of the contestants decides to surrender.
These rules are quite simple, which is why you could maneuver well between them. There must be a good reason for the referee to intervene in a fight.
Of course, the main reason is a deadly attack by one of the contestants. If the participant's life is not in danger, the referee will not interfere. In that case, if the contestant wants to stop the fight he must accept his defeat. Evan knew that very well.
He had cut off Soren's hands, but it did not threaten his life in any way. The cut places were not bleeding because of the thick layer of ice, and Soren was still conscious. According to the rules, there was no reason for the referee to intervene.