Gsl competitions are divided into three levels: Internet cafes, A and S. S is the highest level, and there are four people in a group. The winners and losers compete, that is, four people play two sets in the first two games, then the winner and the winner play, and the loser and the loser play. In this way, one person must win two games, so one person loses two games. In the fifth game, the winner group wins and the loser group wins. The winner appears and the loser is out.
The other two losers need to have a promotion and demotion competition before the final.