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The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu乔师傅病了，到省城来治疗。在省城工作、学习的四个儿女为乔师傅接受手术治疗而忙碌着。大儿媳罗西却去了剧组。乔师傅担心自己下不来手术台，嘱咐大儿子家伟要担负起这个家，二儿子家男为给父亲买药，到火车站去倒火车票挣钱，被公安局收审。家伟因拿钱给家男交罚款与妻子罗西发生争吵，罗西一气之下回了娘家......　　女主根据自己留下的线索，一步步抽丝剥茧，来探查真相，而背叛女主的有七人：一名智识超凡的百岁吸血鬼、用一个脑袋控制四副躯体的战斗高手、能够操纵金属的军人、皮肤能散出毒雾的财政家、可以任意扭曲身体的公关顾问、能走入他人梦境的棋后，以及刀枪不入的棋主。究竟谁才是幕后黑手？(This is what Party a has always demanded: "The products must be outstanding and big!" As a result, this time the mobile phone is bigger than the head.)　　但那又谈何容易，短片毕竟是短片，无法在这16分钟的长度中展现出超脱的两难，只是给了一个没有选择空间的封闭式结尾，这也是我最大的遗憾。所以这部短片画面风格虽然比较西化，但内核是东方释家思想。其实这个标题就是指发现了“真我”这个宝藏，那才是人生最大的宝藏，得宝如此，夫复何求？整个故事以扑克牌的形式展开，也是本片的一大亮点，给人在轻松的氛围中留下一个深深的思考，很值得细细思量与品味一番。红椒最冲动，急不可耐地嚷道：娘，咱们不怕。