不予回应。 拉黑。 保存证据。 多利用隐私设置。 发状态前一定要三思。 向网络管理员举报欺负你的人。 告诉大人。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
If a cyberbully is sending nasty comments to you, going around impersonating you, or just generally trying to upset you online, it can be easy to want to fight back and to tell that person to go away and to start calling that person a few names yourself. But the truth of the matter is, the more you engage with the bully, the more they will think that they're getting to you, and the more likely they'll be to keep bothering you.  You can say something like "Please leave me alone," but other than t