There are three kinds of injury identification: minor injury, minor injury and serious injury. If a person is slightly injured or seriously injured, criminal responsibility shall be investigated. Perforation of eardrum is usually a minor injury.
Minor injury cases can be prosecuted either by private prosecution (criminal responsibility of the victim and civil compensation) or by public prosecution (public security investigation materials are taken as evidence by the procuratorate, and criminal responsibility is investigated by the procuratorate as the plaintiff), and minor injuries can be sentenced to fixed-term imprisonment of not more than 3 years. In cases of minor injuries, if the victim shows that he will not be investigated for criminal responsibility after accepting civil compensation, the public security law may not prosecute.
Therefore, as long as you agree in writing to the amount of compensation, the injured party gives up pursuing criminal responsibility, and the victim applies to the police station or procuratorate not to pursue it, so criminal responsibility can be exempted.