The movie that set the kind of tone and style for this fight scene in its modern sense was Oldboy. A section of the movie involves the main character Oh Dae-su attempting to escape through a narrow corridor. What sets this scene apart is that it is filmed as a single shot, that scrolls from left to right along the length of the corridor. By making this scene one take, without cutting away, the audience is forced to endure the entirety of the violence without any break. This in a way puts the viewers in the shoes of Oh Dae-su and we even see the characters grow exhausted as the fight goes on.
We see Oh Dae-su attack the horde of thugs, however many of them get up after being knocked down. This is another innovation where we see that the main character is not a superman, his blows are unlikely to knock a person out in one strike and this means he often must face the same individuals he struck seconds prior. If you watch street camera footage of fights, certain cases show strikes missing or hit without sufficient power to neutralise their opponents. This leads the fight to go on longer than anticipated, and as an audience we are kept in a state of tension as to what will happen.