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欢乐喜剧人第6季一边是彼此认定相互珍惜的新家人，一边是无法选择关系淡漠的亲生父母，他们艰难抉择却还是顾此失彼。他们不想新家人受到伤害，也不想人生被拖向深渊。点赞就是给我们吃饭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其后，啸山风闻傲天成为金棠和桂生的手下，并经营起运送烟土生意。啸山发现这是回归上海的好时机，便趁傲天运送鸦片时，拦途截劫，终如愿与傲天、金棠共同成立三铿公司。几年间，「三铿」飞黄腾达，雄霸鸦片市场，横行法租界，三人更兄弟相称，合称上海三大亨！