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Bridging mode aims to decouple abstraction and implementation so that the two can change independently. That is to say, the bridging mode further abstracts the implementation details of the original base class into an implemented structure, and then transforms the original base class into an abstract hierarchical structure, thus realizing independent changes of the system in multiple dimensions. The structure diagram of the bridging mode is shown below.1912年，七爷白景琦在山东创立了黑七堂中药铺。当时军阀主政，社会混乱，黑帮、土匪巧取豪夺，民不聊生。白景琦经历种种明争暗斗，刀光剑影，生离死别，爱恨情仇。七爷的发小兄弟田子行能力超群，野心勃勃，他利用七爷的信任暗中屡屡得手。七爷爱上了年轻貌美、留学回国的女医生路青青。七爷和田子行两个男人开始了正与邪、善与恶的殊死较量。二奶奶在关键时刻运筹帷幄，不动声色地直捣田子行死穴。最后一切都尘埃落定，始终以诚信为本的七爷得到了曾经梦寐以求的秘籍。“做出最纯正、优质的药品救世济民！”上苍给了七爷这个机会，他矢志不渝，终成正果。故事鲜明表达了“诚信守信”是立世之本的人生主题。The weather outside today is amazing! Decided to go out and get some air hh [summary] socksThis shovel was dug directly to 10 years ago.聚精会神地盯着尹旭的招数，很是惊讶于疑惑，不止他们，几乎所有人都是这样。Which chains can use the rules in the table (table-to-chain correspondence):