This is a ridiculously broad question.
You could study this topic for an entire year in college and still have more to learn when you get into the real world.
Please, Quora world, learn how to ask questions that can be answered on a platform like this.
TradeSNS易之家呼吁广大网友遵守网络相关法律法规、严禁发布各类敏感不实信息；
同时TradeSNS易之家将严厉打击各类不法传播活动和违法有害信息，构建和谐的网络空间。