If you insult others in public, it may be a violation of public security management or a criminal offence. The victim can report the case to the public security organ, which will handle it according to law, or bring a lawsuit to the people's court, requesting the people's court to handle it according to law, so as to safeguard his legitimate rights and interests according to law.

Relevant laws and regulations:

People's Republic of China (PRC) Public Security Administration Punishment Law

Article 42 Whoever commits one of the following acts shall be detained for not more than five days or fined not more than five hundred yuan; If the circumstances are serious, they shall be detained for more than five days and less than ten days, and may be fined up to five hundred yuan:

(1) writing threatening letters or threatening the personal safety of others by other means;

(2) publicly insulting others or fabricating facts to slander others;

(3) fabricating facts, falsely accusing and framing others, and attempting to subject others to criminal investigation or public security administration punishment;

(4) Threatening, insulting, beating or retaliating against witnesses and their close relatives;

(5) sending obscene, insulting, intimidating or other information for many times to interfere with the normal life of others;

(six) voyeurism, sneak shots, eavesdropping, spreading the privacy of others.

Criminal law of the people's Republic of China

Article 246 Whoever publicly insults others by violence or other means or fabricates facts to slander others, if the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, public surveillance or deprivation of political rights.

The crimes mentioned in the preceding paragraph shall be dealt with only if they are told, except those that seriously endanger social order and national interests.

If the victim informs the people's court of the acts specified in the first paragraph through the information network, but it is really difficult to provide evidence, the people's court may request the public security organ to provide assistance.