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《半边楼》是延艺云在二十世纪九十年代所创作的电视连续剧，反映80年代中期陕西某高校知识分子生活现状。透过十几个“半边楼”中的典型人物表现出的彷徨、思考、探索以及由此产生的种种矛盾冲突，向人们生动的阐述了“科学技术才是第一生产力”这一真理。不够。离了他老子，他倒历练得出息起来，比我这个当娘的都会算计。边关战事不止一年，无数小将崭露头角。提前备货，还真赌对了。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.