Is it illegal for one relative to curse first and the other not?

The act of deliberately throwing feces to insult others' personality is suspected of insulting.

The crime of insult refers to the act of publicly degrading personality and damaging the reputation of others by violence or other means, and the circumstances are serious. The object of this crime is the personal dignity and reputation of others. The rights of personal dignity and reputation are the basic personal rights of citizens. The object of this crime can only be a natural person, not a unit.

Insulting legal persons and other groups and organizations does not constitute an insult. Objectively, this crime is characterized by publicly degrading personality and damaging the reputation of others by violence or other means, and the circumstances are serious.