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Policy pattern refers to defining a series of algorithms and encapsulating them. However, policy pattern not only encapsulates algorithms, but also encapsulates a series of business rules. As long as these business rules have the same objectives, we can use policy pattern to encapsulate them.唐贞观年间，西凉叛乱，李世民御驾亲征，被敌帅苏宝同围困在锁阳城，主帅薛仁贵也被苏宝同的毒刀所害，命在旦夕。薛仁贵之子薛丁山获知父亲遇难，参加了二路平乱大军，西去救父。一路上，薛丁山收服山贼窦一虎、大战苏宝同，最终将薛仁贵和李世民从锁阳城救出。李世民班师回朝，留下薛氏父子继续平乱。苏宝同搬来救兵并派出手下大将樊洪前去挑战。樊洪之女樊梨花对薛丁山一见钟情，不惜和家人反目，献关投薛。薛丁山却听信谄言，误以为樊梨花是杀父害兄的不义之人，将樊梨花赶出唐营。后来在程咬金等人的撮合帮助下，上演了“三休三请樊梨花”的动人故事。最终几经离合，薛丁山和樊梨花终于结为夫妻。在他们的共同努力下，唐军平定了西凉之乱。只是，王翠翘的忍耐快到极限了。他想着，等三年后再说，谁会料到家里竟然不等他回来，就擅自帮他定下这门亲呢。Quality is the foundation and design is indispensable. In order to better meet the needs of young fashion people, Osaka Weaving House has set up fashion trend research institutes in Shanghai, New York and Tokyo in the second year of its establishment, which are operated by a team of professional designers to bring forth the old and bring forth the new.在母亲去世和痛苦的离婚后，安妮和女儿搬回了童年的家。起初一切似乎都很好，但在一个雾蒙蒙的夜晚，艾米丽从卧室失踪，悲剧再次降临。安妮说她看到黑暗中有东西，就带走了艾米丽……一个生物。/beg (beg)