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30年代的上海，战争风云密布，日本特务大肆活动，指使流氓破坏学生运动。年轻貌美的林若兰是圣婴小学体育教员，她的父母在混乱中遇害，于是她找到上海帮会头领段笑容，求他为父母报仇。段娶林为妻，婚礼上黑龙会来袭，段丧命。林若兰在激烈的斗争中，接替段笑容成了上海滩老大。龙二带人袭击黑龙会救出了被绑架的孩子们，撤向码头。为掩护孩子们逃离，龙二和林相继中弹倒下。日本人的阴谋以失败告终。What is high-end, what is atmosphere, what is high-grade!林白略微停顿了一下，说道：趣事倒没有多少。　上海滩三大巨头离奇失踪，租界前总探长邢天杨深入追查，引发一场惊天迷案。宇宙中神秘力量觊觎地球已久，先遣队早入潜入人类之中，一场保卫家园的战争蓄势待发。最终拯救人类的不是现金的技术，而是深藏心中的爱……请……村人见杨长帆与军人远去，完全就是看热闹的心态。走出宫门的那一刻，灌婴看着高大巍峨的宫殿，心情有些有些复杂。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.