OCP (Open-Closed Principle) principle emphasizes that a software entity (class, function, module, etc.) should be open to extension and closed to modification. That is, every time there is a change, the behavior of the existing type should be enhanced by adding new code instead of modifying the original code.
夏晴、夏雨姐妹的父母是我党地下工作者。抗战胜利时，国民党情报机关绑架了夏雨，姐妹从此失散。=1950年代末，夏晴受组织委派到香港工作。丈夫宋小涛在和台湾特务打交道的过程中，被特务盯上。为了安全起见，组织上决定让夏晴随宋小涛一起回到内地。然而在经过海关的时候，丧心病狂的台湾特务制造混乱，枪杀了宋小涛。夏晴看着丈夫在自己怀里死去，无能为力。回到广州，夏晴主动要求去公安局工作。她被派到了公安局刑侦处，见到了宋小涛当兵时的战友，也在刑侦处工作的汪卫明。汪卫明得知宋小涛牺牲，发誓要好好照顾夏晴和她的女儿佳佳。宋小涛的父亲，也是夏晴岳父的宋涛，是市公安局二处处长，负责反特工作。因为在一次案件中坚持原则，被调离岗位，转到国防工厂326厂任保卫处长。得知岳父的遭遇，夏晴决定对岳父隐瞒宋小涛牺牲的消息。然而宋涛最终还是知道了这一噩耗。1960年代初，夏晴调到公安局二处工作。在女儿上学的幼儿园，她见到了刚刚调来的班主任何梅。何梅的音容笑貌，让夏晴觉得她有可能是自己失散多年的妹妹夏雨。但宋涛否定了夏晴的猜想，
二十一世纪初，中国的宇宙飞船发射成功后，境外的间谍组织把目标锁定在我国著名航天专家、航天研究所所长陈冬生的身上……某日夜，在海迪娜国某处一个静谧的场所，一名境外间谍和一位神秘的女士在谈着一笔交易……
Variable name: CLASSPATH
In addition, makeup is getting thicker and thicker.
Soft light mode. Whether to darken or brighten the picture color depends on the upper color information. The effect is similar to putting a scattered spotlight on the image. If the brightness of the upper color (light source) is higher than 50% gray, the lower layer will be illuminated (lightened). If the brightness of the upper color (light source) is less than 50% gray, the lower layer will darken as if it had been burnt.
董翳则是被低沉的一个，先是在单父县被尹将军打的乱花流水。
所以只能退而求其次，选择刘邦了。
Experience is bought with money. After many failures, There is no shortcut, No matter how well others say it, You have no practical experience, You may still lose money, Don't give up lightly after losing. Having said that, it is very annoying to have no money. It is easy to do things without money, and it is difficult to do things without money. Therefore, if there is no follow-up capital, it is not impossible to give up temporarily. I can't give up. Let me work to earn money. I can't go. I haven't worked since I was 18 years old, and I am basically tossing and turning myself around, so I have to stick to it.
尤其是在这种时候，嬴子夜一个不留神，一脚踏在下裳边上，脚下一绊便摔倒了。
跨越时空的爱情在此过程中产生……
Month, no zero display, 1-12
该剧是以现代人之间流行的“小确幸”为主题，讲述为了克服日程生活中的压力，主角珍秀拥有12种小幸福，并与在这些幸福中出现的女主发生的浪漫故事。
葫芦听这话有理，便不吱声了。
巴黎，美国男人邂逅了单亲妈妈法国女人，他带着她还有她的女儿一起来到美国生活。美国，美国男人和法国女人幸福生活着，虽然还没有结婚，但她的女儿已渐渐把他当成父亲。不过很快，女儿厌倦了异国他乡的生活，而法国女人的签证也过期了，母女两人只能回巴黎。牧师宣扬着上帝与爱。美国，美国男人和青梅竹马的美国女人意外重逢，重燃爱火。巴黎，女儿跟她的父亲住在了一起，法国女人找不到工作，开始厌倦巴黎，于是收拾行李来到美国，找到美国男人，准备跟他结婚。但一切似乎并没有那么简单。
那些副将军自然不会顾忌一个没有背景的黎章，若是送出他能平息这场纷争，再好不过。
修车工阎涛平日受尽老板的欺辱，打斗中误杀老板。逃到偏远的青石镇库区躲避生活。看水库的老李是阎涛的远房亲戚，把阎涛安排在一个旷野中独立的别墅里。但是老李严禁闫涛去二楼。闫涛某夜隐约听到楼上有声音，强大的好奇心驱使阎涛走向了二楼。推开门的那一刻阎涛发现了一个惊天秘密……
匆忙之间，将承影剑藏在溪水边的石头之后，她不想让尹旭见到断水剑，至少现在不想。
In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.
