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扶苏在秦人心目中有着非凡号召力，秦国人对其很是尊敬和怀念，以至于当初陈胜吴广起义的时候，就曾打出扶苏的旗号。Template method mode: encapsulate algorithm structure, define algorithm skeleton, and support algorithm sub-step changes.请两位少爷高抬贵手，饶过在下。For example, Xiao Hong recently saw a pair of shoes on Taobao. But after contacting the seller, Only to find out that these shoes were sold out, But Xiao Hong likes these shoes very much, So contact the seller and ask when the seller will have the goods. The seller told her that it will take a week to have the goods. The seller told Xiaohong that if you like, you can collect our store and inform you when the goods are available. Therefore, Xiaohong collected the store, but at the same time, Xiaoming and Xiaohua also liked the shoes and collected the store. They will be notified in turn when the goods arrive.王本固一介莽人而已，总督在京，必能解围。Not the first SYN message-> Check whether the message is retransmitted: if it is retransmitted, it will be forwarded and added to the white list; If it is not, it will be discarded and added to the blacklist.At this point, DDoS Attack and Defense: The first part of the introduction from principle to practice is completed. Welcome to offer more insights.