For interface programming, a lot of changes that may occur in the system in the future can be isolated. Why? If the code is written for an interface, he can implement the interface with any new class through polymorphism. However, when the code uses a large number of specific classes, once new specific classes are added, the code must be changed. Violating the opening and closing principle.
电视连续剧《敌营十八年》是中国内地第一部电视连续剧，由导演王扶林执导，张连文、张甲田等出演。该剧融戏剧性、惊险性于一身的惊险大剧，特别是主题歌《曙光在前头》更是随着电视剧的热播被广为传唱。 该剧分当机立断、关健时刻、将计就计、智斩女妖、码头迎亲、虎口抜牙、高风亮节、排险救女、虎穴扬威等9集。说的是解放前夕，共产党员江波为完成党交给的光荣而艰巨的任务，只身深入虎穴十八年。他不顾个人安危，与敌人巧妙周旋，关键时刻当机立断，急中生智，避过敌人的重重监视，一次次将情报安全送出，粉碎了敌人的阴谋诡计，终于迎来解放。
虽然突发奇想，甚至希望渺茫，可是为了最爱的霞高，稻叶和伙伴们甘愿跃入水中，朝着光辉的目标全力奋战……
2. The registerForm.onsubmit function lacks flexibility. If we add a new validation rule or want to change the length validation of passwords from 6 to 8, we must change the code inside the registerForm.onsubmit function. Violating the open-closed principle.
故事发生在1990年代初，处于青春期的杰敏在父亲去世后被送到亲戚家生活，亲戚家是虔诚的“耶和华见证会”信徒。在那里，杰敏与一位见证会长者的女儿玛丽克建立了意外的联系，她们立即被对方吸引并开始了秘密的、不言而喻的地下恋情。但是，当她们之间的吸引力变得再也无法隐藏时，这个宗教社区开始将他们分开，迫使两个女孩在信仰和爱情之间做出选择。
II. Advantages and Disadvantages of Party Committee Members of Group Companies in Thoughts and Actions:
Next, we are going to implement the Validator class, which is used here as Context and is responsible for receiving the user's request and delegating it to the strategy object, as follows:
不过，现在已经有很多人需要深入的报告了。
胡镇他们理屈，又是故意杀人，咱们又是良民，他必定是斩刑。
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一伙海外敌特“教主”组织闻讯秘密训练一批特工，企图阻止肩负建国重任的专家搭载的专列出境，妄想将新中国的建设美梦扼杀于摇蓝中。
全场唏嘘，汪滶真的是对杨长帆无条件的支持，言听计从，即便倾家荡产。
一代帝皇赵匡胤，少有大志南唐后主李煜，文采风流乱世纷争，群雄逐鹿，时势造英雄江山、美人、孰轻孰重？君王、囚寇、孰取孰留？曾经的结拜兄弟，一起出生入死，最后却反目为仇过去的亲密爱人，彼此心心相印，最终却形同陌路一个荡气回肠的英雄故事，一曲缠绵悱恻的爱情悲歌!
4. Every time the same type of skill determines that poisoning is successful, poisoning damage will occur directly after superposition.
The unbearable Youmei and Qinglan made great moves. Fan Shang gave Yu Ying a mobile phone and Yu Ying told him that he wanted to change his mobile phone number. Yu Ying couldn't help shedding tears when he looked at the text message sent by Yi Shang. Koko was furious when he learned that Qinglan was beaten. Youmei lied that he had never started to beat Qinglan. The whole family stood by Youmei to blame Qinglan.
故事讲述安乐冈花火（吉本实忧）和粟屋麦（樱田通）表面上一对理想的高中生情侣，内里却是各自喜欢别人。花火喜欢钟井鸣海（水田航生），二人是青梅竹马，他对花火来说就像哥哥，现在是花火的班主任。粟屋喜欢的是校内的音乐老师皆川茜（逢泽莉娜），然而鸣海却喜欢她。花火和粟屋因为同病相怜，产生了和对方相近的感觉，于是成为「契约恋人」，互相安慰取暖。
该剧的主人公是五个都市单身女性，以退役名模陈青霞为核心，海归、金领精英菲奥娜、内向、中学英语老师毕然、在国外长大的媒体人凯瑟琳和担心成为剩女的李小仪，组成一个姐妹团。她们有各自的追求——陈青霞在其父病危的时刻和父亲达成谅解。菲奥娜追求地位，却被无权无财的富强打动；毕然想要一个可依赖对象，当她刚从一个感情中走出，确定要和自己心理治疗师一起生活的时候，她的前未婚夫却又让她做出了新选择。凯瑟琳希望建立一个没有欺骗、真诚平等的感情关系，然而还是上了一个看似淡泊的伪艺术家的圈套。李小仪单纯地想见识一下爱情，可是她男友的父亲却是曾经抛弃过李小仪家庭的生父。
