The ending was not as good as expected. This kind of plot is a bit similar to "The Extraordinary Suspect". The police think they know everything, but who knows that everything is just a lie fabricated by a highly intelligent criminal. But there is a point in the sentence, the police may not know it, but she chooses to believe what she wants to believe.
It is very ingenious and novel to compare the online world to a subway car, which is very good. But the other bridges are a little more ordinary. In the contest between hackers and hackers, the loser in real life has become a god-level figure in the online world. It's both real and fantasy, depending on which angle you look at.
There are many interpretations at the end. Some say that there is actually one person from the beginning to the end, and some say that there are four people but hide their identities. But either way, the protagonist appears to be the winner. But in the era of the Internet, who dares to say that he is the winner who has the last laugh.
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