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One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.女扮男装进入男团，作为团宠成功出道，却被偶像前辈频频抓包，一段啼笑皆非的爱情故事由此展开。古代某县城的县令郭台和父母、丫环、师爷、衙役同住在衙门之内,他们之间不断地因为误解发生着有趣的故事。台与他们的想法不一样,为此时不时地发生冲突。 郭台断案表面糊涂,但是,每次都能断的清正廉明，衙门里的于师爷没事时全是主意,等到正事时,出的全是馊主意,给郭台找了不少的麻烦。县城有个地绅鲍瑜,为霸一方,经常做出恶事,郭台每次都能惩恶扬善,给鲍瑜教训。 衙门里来来往往的客人,围绕着他们也不时出现喜剧故事,比如:书圣茂才到衙门里来,老夫人为了不让郭台和虎妞相好,要将虎妞介绍给书生茂才成亲,郭台巧用计谋让茂才娶了赵财主的女儿,将虎妞继续留在了衙门之内,等等。真是人比人得死，货比货得扔。皇上是谁？那是天下之主。Increase the Maximum Half Connections