Select the top three teams as seed teams (or draw lots) and enter the second round directly. The remaining 26 teams draw lots in the first round.
Twenty-six teams participated in the first round, 13 games.
The winning 13 team in the second round and the +3 seed team in the first round participated in 8 games.
In the third round and the second round, eight teams won and four games were played.
Fourth round semi-final, 2 matches
The fifth round final, 1.