Fierce Battle

"Principal Shi, please tell us the rules!"
Qin Feng was rubbing his hands and couldn't help but get excited to try it out.
Gavril Shi smiled playfully, "Don't worry, the rules are very simple, it's a free-for-all, and the final assessment will be based on the number of people knocked down and the time they stood on the ground."
"That is to say, this melee will continue until there is only one person left standing."
As soon as these words were spoken, everyone in the audience suddenly...