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“九•一八”事变爆发，家破人亡的武林志士华志强与恋人张小叶逃离故土。两人途中失散。小叶避难于以当了汉奸的姨夫魏辛家。志强则被中华武馆的杨馆长收留。外交官间谍坂田为征服中华武术界，安排自己的儿子小次郎杨馆长比武。后设计毒死杨馆长。华志强为师傅报仇，打败小次郎。坂田唆使忍者砸武馆，志强逃出，在黄河边苦练绝技。不久，苦练忍术后的小次郎约志强在长城一决雌雄。志强最终获胜，而坂田突然下毒手，志强倒在枪口下。To be confirmed这柄剑两边剑锋都是钝口，剑尖更圆圆的似是个半球，其重量竟不下七八十斤，比之战阵上最沉重的金刀大戟尤重数倍。年轻老爷沉默了一会，道：备车，去瞧瞧。不能发作少年，他便转向护卫怒喝道：不是让你们看着他吗？怎么还让他放火？一个护卫哭丧着脸回道：他说他要出来拉屎，说外面冷，要烤火，就用篮子垫了块木板。In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.