At this time you can see that everyone who previously waited for Allen to get defeated by his opponent became silent. None of them make any sound because they are still processing what happened at the arena. They still cannot believe that Allen was able to defeat his opponent that quickly and at the same time he did not use The Spiritual Tiger technique. Only using his strength was he able to defeat his opponent who was naturally stronger than him.
Really nobody is able to believe that and because of this everyone doesn't know how to react to that situation. But suddenly everyone here heard the sound of clapping. Instantly everyone looked in that direction and saw that it was the principal and Fiona who were clapping.