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“我有个请求，希望我能回到太空? Output: this is mailsender!The disadvantage of state mode is that many state classes will be defined in the system. Writing 20 state classes is a boring job, and many objects will be added to the system. In addition, because the logic is scattered in the state class, although unpopular conditional branch statements are avoided, it also causes the problem of logic dispersion, and the logic of the entire state machine cannot be seen in one place.郎卓为梦想恋人佳铃买了一套阳光充裕的房子，郎卓期盼有一天远去上海的佳铃能够重新回到自己的身边。然而，郎卓却与女大学生叶繁相遇了。同因寂寥而相处的两人产生了情感，但两人觉得这种没有誓言的情感似乎不是爱情，郎卓依旧对暗恋的佳铃无法释怀。佳铃的突然归来使这段萌芽的爱情无疾而终了，痛楚的叶繁离开了朗卓的生活，许下愿望哪怕倾囊所有也愿意去换取佳铃的位置，哪怕只有一天也好。We know that in x64, the first six parameters of the function are stored in RDI, RSI, RDX, RCX, R8 and R9 registers in turn. If there are more parameters, they will be stored on the stack. Therefore, in order for the computer to run the commands we want, we need to find a way to put the address of "/bin/sh" into RDI so that the machine can execute the system function. After carefully examining the linux function stack structure, we can find that we can use RAX register to put the system () address into RAX, then look for code fragments with JMP rax to make use of, and at the same time use RDI register to pass the parameter "/bin/sh" to finally achieve the attack purpose.六和塔之战后，乾隆利用红花会剪除异己，并有力地掌握了朝政大权。红花会总舵主陈家洛因思念霍青桐，只身前往维疆，遇上青桐妹香香公主，两人互相爱慕。深爱家洛的青桐只好将爱深藏心底。家洛返京后，清军重兵进疆，木卓伦被杀，青桐失踪，香香公主被俘献给乾隆。乾隆诱骗家洛劝香香公主服从自己，暗地设计将红花会首领一网打尽。香香公主力助家洛反清大业甘作牺牲，发现阴谋后自杀。乾隆设下埋伏使红花会首领全部罹难，仅家洛一人突围。为复仇，他重返维疆。