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这期间英布和尉缭联手巩固了关中的防务，并且的逐渐地向关北地区推进。看到这里，杨舟心中突然也生出一阵苍凉。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.虾球，自小生长在香港贫民区的一个小混混，父亲在虾球5岁时便去美国打工，一去便肴无音信，虾球母亲体弱多病，虾球从小便只有一个念头就是“要为了生存而活下去”，但命运总是在和虾球开玩笑，他只想靠自己的力气求一安稳的生活，却阴差阳错地被香港黑社会老大“鳄鱼头”看中成为其手下……在鳄鱼头从黑社会老大成为逃犯，直至在广州风生水起成为清剿队的团长，虾球的命运也随之一路起伏跌宕，最终认清了自己要走的道路。男主要去照顾外祖母，却意外继承了爷爷留下来的一栋公寓，所以他必须得去管理公寓出租的事。因此遇见了高傲的女主，两人发生了小摩擦。公寓里，每天都上演着各租户的麻烦事，还有处心积虑想要夺走公寓的家族亲人。在混乱之中，女主出手帮助，两人的爱情因此慢慢滋生……