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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.此时正值子夜时分，没想到此女芳名子夜，当真是应时应景。徐家兄妹看着尹旭手下近卫军做出的这等狂暴举动，一个个恨得咬牙切齿。张一和张鑫本是建筑领域令人艳羡的佳偶，张一怀孕后张鑫主动提出辞职照顾家庭，到如今女儿笑笑已经五岁。从表面上看，事业稳步上升，家庭美满幸福，张一没有意识到，她已经处在被谎言包裹的漩涡之中……描述一位智勇双全却孤军奋战的刑警，如何在因缘际会之下，结识一群富有正义感，各有所长的朋友，成立了专门揭发黑金政治黑幕的团体，进而展开一连串打击犯罪的行动……　　不同于韩剧惯用的都市浪漫风格，该剧以冷酷而更倾向于社会写实的手法，描述一位智勇双全却孤军奋战的年轻刑警郑民秀（宋承宪饰），如何在因缘际会之下，结识一群富有正义感、各有所长的朋友，成立了专门揭发黑金政治黑幕的团体——赞武团。一群年轻人，为了正……其实每个人都是木偶，只不过很多人看不见牵在自己身上的线罢了……