When two people fight, do the police complain about swearing first or fighting first?

When two people fight, no matter who starts first, it's a beating. This kind of behavior is generally recognized as fighting, and legal responsibility is borne according to the consequences.

Causing minor injuries, which does not constitute a crime, shall be given administrative punishment; Those who cause minor injuries are suspected of intentional injury and sentenced to fixed-term imprisonment of not more than three years; Whoever causes serious injuries shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years.