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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.1884 年，周滢跟着养父周老四来到关中，输光钱财的周老四将周滢卖到沈家当丫头。周滢逃跑时躲进吴家东院大少爷吴聘的轿中，颇具商业头脑的周滢得到了吴蔚文的赏识，被获许留在吴家。沈星移怀疑沈家大少爷被吴聘暗杀，出手将其打伤。为救昏迷的吴聘，周滢嫁入吴家冲喜。吴聘身亡，吴家处境困窘，周滢决定要重振吴家东院。 周滢入股陕西织布局，却遭受了朝廷反对洋务运动势力的打击，陕西机器织布局面临重建。为救深陷牢狱的周滢，吴家交出陕西机器织布局的所有股份以及与洋商的生丝合同换得周滢一命。出狱后的周滢重燃斗志建立泾阳布厂，吴家产业再次有了新起色。庚子国难，周滢用自己的方式担起了吴家大业的重振之风，又引领了动荡时局的改革之路。//Leadership Interview睡美人动漫版新一季四个新案件，四个新嫌疑人，一个房间，谁说的是真话？此地作为一个海盗聚集地是可以的，但若在此设市，易攻难守，还要拨来苔湾的官吏来管理，大兴土木，反倒成了麻烦。抗战大剧《大掌门》根据长篇小说《画年》改编而成，讲述了“七七事变”前后杨家埠的民间艺人和爱国志士，为保护祖宗传下来的艺术瑰宝，与日本侵略者斗智斗勇、拼死抗争的故事。