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The 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.Meemaw和Sturgis试图让Sheldon和另一个神童（Mckenna Grace）成为朋友，这让Sheldon惊慌失措。身在果阿邦的三位年轻好友计划到一栋老别墅里寻鬼。一个新的家庭搬进来后，这座旧宅中埋藏的过往以惊悚的方式再度浮现。Beast King Utara