First, no matter what happens, we must communicate well and don't fight with each other easily.
Second, we must pay attention to our own safety in the process of persuading.
Third, if you are injured in the fight, there should be a fight, and both sides should pay compensation.
No matter what happens to adults in life, they should communicate and solve it well. Fighting may not solve any problems, but it will also hurt both sides, and if there are good people to stop the fight, these good people will also be hurt. So we must pay attention to our own safety when trying to stop the fight, because they don't care about others when fighting with each other. In case of such a thing, we still have to help them call the police to solve such a thing, because if we stop fighting ourselves, we are likely to get hurt.
For this matter, the person who stopped the fight was injured. There should be a fight, and both sides have to pay, because after all, they caused it. If they don't fight, others won't stop fighting, so others won't be hurt. So they should pay for this.