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Can't dig any more, just make a summary.In simple and popular terms, it is "white plus black minus, bright plus dark minus"烈火丽人李斯说道：项羽一如既往的要杀刘邦，我不相信刘邦之前得到消息，会不足防备。雨之夜，徽州富商汪家遭灭门，一双女儿侥幸逃脱。小女儿汪佩兰偶然在另一富商鲍家发现了灭门惨案的线索，于是她毅然斩断情丝，挥别了青梅竹马的初恋情人，化名为商海棠，给鲍家“傻少爷”鲍文洵冲喜，嫁入鲍家。然而，鲍文洵只是装傻而明哲保身……一对少年夫妻同处险恶的宅门，不断光芒碰撞，相互设防却又不自禁相互吸引。1937年底，负责搜罗亚州国家珍贵文物的特务组织“东方史馆”的副馆长山田潜伏在太原，执行一项绝密任务：夺取宁家价值连城的景泰蓝双龙。Although the above code can meet the requirements, it is not easy to expand and difficult to read. If I want one or two conditions in the future, if I want to recharge 300 yuan successfully, I can win the 150 yuan red envelope, then I have to change the code inside at this time, so the coupling between business logic and code is relatively high, and I accidentally correct the wrong code. At this time, we try to use the responsibility chain mode to transfer objects in turn to realize it.