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姜玘葱白的手指掐紧了丝绢，紧闭嘴唇，一言不发。以至于对巴蜀地关注和防御都有些疏忽，现在的感觉似乎有些为时已晚。Which chains can use the rules in the filter table: INPUT, FORWARD, OUTPUT　　经济体制改革的初期，哈尔滨市招商引资，开拓经济新领域，市场繁荣昌盛，人民生活水平蒸蒸日上。但在社会经济日益发展的同时，也滋生了一些邪恶势力。以俗称“刀枪炮”的肖龙飞为首的带有黑社会色彩的犯罪团伙，利用不法手段谋取利益，无恶不作，致使民心不安，经济发展受阻。机智骁勇的公安干警不畏强暴，历尽艰险，最终把这伙不法之徒绳之以法。在中国少年先锋队建队70周年之际，北京、深圳、长沙、昆明、合肥等七个城市的少先队员开展演唱歌曲《中国梦》少儿版快闪活动。少先队员们积极响应习近平总书记号召，从小学先锋，长大做先锋，努力成长为能够担当民族复兴大任的时代新人，为实现中华民族伟大复兴的中国梦不懈奋斗！In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.　　然而，一切并非如此简单，死亡与阴谋的狂潮随即袭来。在这场丧失人性的角力战中，注定没有胜利者……