Correct answer
When a child comes home to report being bullied, parents must tell the child the correct way to deal with it when they find that it is purely bullying. For example, encourage children to say "I don't like what you do" and "I'll be rude if you do this again" to the bully's baby and so on.
Can't be arranged instead.
Some babies are afraid to fight back because of cowardice or other reasons, and parents can accompany them, but remember to let the children handle it themselves, and parents can't do it alone.
Teach children a few tricks "unique skills"
Teaching children a few "unique skills" is also a strategy to improve their social status. Babies often worship people who are better than themselves, and they have little motivation to bully such companions. Therefore, teaching children some skills in their spare time, such as origami and magic tricks, will help them "shock" their peers who like to bully others.