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Table (Function) <-> Chain (Hook):In essence, classification is to find the common points and differences of things in our thoughts. It is the basic method and ability for us to know and understand the world. On the basis of classification, it is possible to judge and reason, and to form concepts and make decisions. Classification requires comprehensive demonstration activities such as association, analogy, reasoning and extension, and is the basic cell of thinking.Since 2017, a total of 580 operator routers in China have been monitored and found to have been used to forward cross-domain forged attack traffic. It is mainly located in 28 provinces and cities, and no operator routers located in Ningxia, Tibet and other provinces and cities that forward cross-domain forged attack traffic have been found.　　“犯人77号”带领“囚徒们”对“狱警们”展开了报复，整个监狱陷入失控状态，直到代表实验结束的红灯与警报声出现……