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郑氏跟嫂子刘氏相视一笑。System.out.println ("disk shutdown! ");公主莲的父皇被长兄无情杀害，不得不带着年幼的弟弟昭踏上逃亡之路，他们将穿越重重险境与国境另一端的将军们汇合。这一支忠心护主的军队已整装待发，誓死匡扶幼主重回朝廷继承皇位。谋反的皇兄在国境内悬赏通缉莲昭二人，使得两人逃亡的路上无人相助。姐弟二人不得不雇佣看起来蛮横无理的异族流浪汉——阿肯充当他们的保镖。然而阿肯的来历并不简单：他饱受战争摧残，来到东方是为了逃避十字军带给他的血腥记忆...Death is the ultimate powerlessnessThe above is only a model of "Long En" bicycle, If you need to generate other types of bicycles, Other subclasses can be written. The most important advantage of factory mode is that some of the same methods can be implemented. We can write code in the parent class for these same methods. If we need to implement specific business logic, we can rewrite the parent class's methods in the subclass to implement our own business logic. In terms of professional terms, there are two points: First, weaken the coupling between objects and prevent code duplication. Instantiating a class in a method eliminates repetitive code. Second: Repetitive code can be written in the parent class. Subclasses inherit all member attributes and methods of the parent class. Subclasses only focus on implementing their own business logic.