There was a fence in the center of the long stadium.
This is to prevent horses and riders from colliding with each other and dying. If you get hit by a spear and fall off your horse, you can survive, but if your horse collides with you and you fall over, you are at great risk of dying even if you have armor.
"You win if you knock your opponent off his horse. You get points if you hit the head, torso, or shield to break the spear. If both sides are on the horse after three charges, the score determines the winner. If the score is tied, the three charges are repeated until the winner is decided. Please be careful not to attack the horse, the opponent's lower body, or the right arm, as this will result in disqualification,"
Hansval's attendant explains the rules at Carl's side.
Of course, Carl already knows this, but people who are too excited or flustered often make mistakes, so the rules are explained again before the start.
"Are you ready?"