In the knockout stage, you can play by drawing lots at random. However, in order to prevent the popular players from being eliminated in earlier rounds, which will affect the observability of the competition (including box office income, of course), the organizers will arrange the competition by seed matching, and the top two players will compete in two lines. If there is no unexpected result, they will meet in the final.
Because the negative side of the knockout will be eliminated, the competition will be fierce, and a large number of contestants can be accommodated, so it has become a form of many competitions. However, most of the contestants only have a few games, so some games use double elimination, so that the negative side can continue to participate in the elimination. The winner is the "resurrection of the defeated department", and you can decide who is the champion again with the winner.