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Invoke invokes the delegate's instance method to execute the methodThe first type is implemented through the relationship between the parent class and the child class.In the case of a reflection attack, An attacker uses a controlled host to send a large number of packets, The special feature of these packets is that the destination IP address points to the server, router and other devices as the reflector, while the source IP address is forged as the IP address of the target. When the reflector receives the packet, it will think that the packet is a request sent by the attacked bird, so it will send the corresponding data to the target.崔恩雪（金所炫 饰）的父母成为了一场性质恶劣的谋杀案的受害者，尽管崔恩雪幸运的从凶手的屠刀之下逃脱，却被车撞伤，失去了记忆。崔武恪（朴有天 饰）是一介小小巡警，命运和巧合将两人紧紧地联系到了一起。1941年夏，日本驻山西凤城军区总司令松井集结兵力对凤凰山八路军展开了疯狂的围剿，我军在潘中和司令的带领下艰难抵抗，开战游击战，更是派出了以李剑为首的七人组成的“利箭特战队”炸毁日寇的弹药车，封锁敌人的军火运输线，松井精心策划的一次大规模围剿八路军计划宣告失败。松井严厉问责凤城守备队长清水光一，清水大为恼火，展开报复，残忍地杀害了李剑的父母及全村村民。Hunan Province林依（程媛媛 饰）和男友孙伟（安琥 饰）正在如火如荼地发展着地下恋情，而此时，警察却突然来到林依的家中告诉他孙伟已经死亡多时；辰（洪辰 饰）所住的对楼每晚都出现同一频率的灯火，而与她夜夜灯火对谈的男生却仿佛和另一个女生有着不能言说的秘密；刘一豪（周柏豪 饰）时常看见对楼女子惨叫求救，然而当他通知警察进行解救时，却惊人地发现房内空无一人……这一切背后都藏着怎样的秘密？遭遇离奇经历的他们，甚至还面临死亡的威胁，为此他们不惜一切代价揭开真相。