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I believe all the students who took the history examination still have the impression that the division of these three worlds is of far-reaching significance to China's diplomacy and is also a great sharing of China's diplomacy to the world. It is of great significance and is a necessary examination site.Mystery:Each object has its corresponding state, and each state corresponds to some corresponding behaviors. If an object has multiple states, there will be many behaviors. Then the judgment of these states and the behavior completed according to the states will lead to multiple conditional statements, and if a new state is added, the existing code needs to be changed. This kind of design obviously violates the principle of opening and closing, and the state mode is used to solve such problems.该剧讲述了经侦队长萧剑与金融天才胥枫屡屡交手，最终破获跨国金融案件的故事。所以大众看到这首诗后，无不震撼、倾倒、折服，就连一些自视甚高的专家学者也都不吝赞誉。