How to establish the debating system of 18 team

Your figure is so embarrassing, it seems that it will be a little unfair anyway. Divide into four groups, with 4, 4, 4 and 6 teams in each group, and then each group decides 1 team to become the semi-finals.

There are three qualifying teams in the first round of the sixers, and then one team draws lots to compete with the winners of the other two teams for the right to qualify. Or this group will play in the form of round robin and elimination.

After all, luck is also a lovely embodiment of strength! Good luck with the debate!