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Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.然而，项羽会给他成功撤退的机会吗？苏角那里等着的就一定就是援兵吗？(未完待续)逐鹿152_第一五二章秦军溃退（求订阅）更新完毕。宇宙深处,邪恶野蛮的兽人族和煞克族摧毁了圣灵族的家园,还想夺取战斗之钥,以侵略地球。沦落在外的圣灵族人莎吉选中维特、古拉、艾克、祖恩、阿宾、阿曼六个地球人,帮他们打造性能强大的极速战轮——「军刀」、「终结者」、「回声」、「战斧」以及「狂坦克」,并训练他们成为极速战士,与兽人族和煞克族对抗,誓言取回战斗之钥,保护地球。但是韩信，尹旭相信他的本事，他的要求完全在情理之中。这帮赶考的钱也太好赚了。因此救下一个赢子夜，压力与风险着实不小，尹旭竟然就照做了。For Jia Min, this blow is even worse than in the original work. After all, this time Gu Xixi has reminded...