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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　　殷商末年，纣王暴虐，民不聊生，通天教主与申公豹想要趁乱利用万仙阵毁灭凡界。为了对抗邪恶势力，姜子牙集结杨戬、哪吒等众仙拯救凡界，过去在不同的故事中各领风骚的东方神话英雄热血集结，各显神通。一个波澜壮阔、充满东方神话色彩的正邪对抗的故事就此展开……Qinglan told Kezi about the reason for the healthy divorce. Kezi angrily asked why the health who came back from work did not say anything about his ex-wife's extramarital love. Healthy and angry came to Qinglan, see Qinglan did not open the door, so severely kicked the door. Small rate please hyun cha to find a job for his son. I don't know how to explain to my father that Yu Ying, who worked as a police officer in Yishang, was in distress. Cai Xiu blessed Yu Ying and looked at Yu Ying's back and shed tears. Yu Ying came to Shengmei and said he hoped to make up with Caixiu again. Yi Shang proposed to marry Ying, but Yu Ying, who knew that his father would oppose his marriage to the police, painfully broke up.　全台湾最大茶叶出口商的独生女薏心（连俞涵 饰），邂逅因美援任务重返台湾的失意战俘KK（温升豪 饰），她决定不顾父亲吉桑（郭子乾 饰）反对，介入债台高筑的家族事业，即使身份与使命相差甚远，背负忧伤过往的KK仍深深吸引著薏心，诡变的时代危机环伺，少女薏心如何在茶叶商战中，带领摇摇欲坠的日光茶公司走向世界？　　电视剧《茶金》由金钟导演林君阳执导，故事灵感源自真实人物与历史。知县虽小，也是父母官。连小叔那时候都没对上来呢。