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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.牧羊姑娘古秀秀喜唱山歌，青年刘大龙自置帆船，运货于县城与小镇之间。秀秀与大龙时以山歌对唱，情愫互生。曾老虎欲娶秀秀，以追债要胁古老头许婚；大龙冒险运货入城，冀替古老头还债。怎料大龙竟然失踪，古老头既无钱还债，秀秀亦以为大龙已死，无奈答允下嫁曾老虎……让医生李询（李乃文 饰）万万想不到的是，这天上午上班碰到的第一个手术，就是自己的妻子徐春和一个陌生男人在一辆车里的车祸，在救治过程中更让李询震惊的是那名叫陈默（焦刚 饰）的陌生男子是妻子的情人，他忍住心疼，和自己的同事、也是徐春前男友的钱程（王佳宁 饰）一起将徐春和陈默的生命从手术台上抢救下来，但徐春却因头部伤势过重而失忆。 　　要不要去恢复徐春的记忆成了摆在李询面前最为残酷的难题，如果恢复了徐春的记忆，就是恢复徐春对自己的背叛；如果不去恢复，就违背了作为丈夫和医生的良知和职业道德。李询和钱程还是决定去想办法恢复徐春的记忆……宜(张可颐)为人开朗活泼，常爱助人，深得人喜爱。但一次意外，宜因救人竟触电死亡，虽得在场的明(郭晋安)实时抢救及施以人工呼吸，惜仍返魂无术。宜到阴间得优先投胎，好奇下翻查名册，竟发现来世的父母是其表姐英(陈法蓉)和龙(张家辉)。但英与龙却是斗气冤家，为撮合二人，宜不惜向鬼褓姆小波(林晓峰)及死前曾和她通了气的明求助。　　Puen和蓝菲去到了Warat下榻的旅馆还有拍戏的地方，Pang的经纪人误将Puen认作Pang。于是双胞胎相遇了，Pang不相信Puen和自己是双胞胎，还去做了DNA测试。Yes, if there are 7 people in a group, we will have 7.