1, draw two lucky teams first and do not participate in the first round of elimination;
2. The other four teams draw lots against each other, and the winner enters the semi-finals; The loser draws lots against two lucky teams, and the winner enters the semi-finals;
3. The semi-finals will be drawn by the usual elimination system.
Benefits of this arrangement:
1, it is fairer to draw lots to prevent the team from entering the semi-finals directly.
2. The final winner is more convincing: three victories;
3. The losers in the first round also have the opportunity to turn over and start over, reducing the chance.
The time is well arranged so that all classes can take part in the competition.