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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.黎章停了一会，才对她耳语道：我刚才想，咱们如厕始终是个大问题，怎么才能想出个万全的主意来。　　拥有状元之才的风流才子柳士杰琴棋书画、诗词歌赋乃至三教九流无一不精，惹得方圆百里的姑娘们为之心猿意马，身前身后美女相随无数。偏偏士杰心高气傲，一不屑进京赶考，二不娶胭脂俗粉。一心过着逍遥自在的田园生活。于是方圆百里的姑娘为拴住士杰之心，可谓煞费苦心。The technical scheme further optimized by the utility model is that the connecting piece is a fixing bolt.他颓丧极了：有围墙可不好办，而且这里到处都是人，就算爬墙也容易让人看见。We can choose? 0x804850d-0x8048510 These four instructions are used as gadgets:Let's take it apart. No.1 is the filter tip, No.2 PLA has shown signs of melting from this perspective, and No.3 hollow filter cotton also has traces of black edges. The last part of the smoke bomb was already quite dark.