1. The host will automatically enter Group A, occupying the position of A 1. The other seven seed teams will draw lots from B to H to enter the first place in the corresponding group.
2. After determining the seed team of each group, draw out the second team and enter eight groups in turn, then the third team and finally the fourth team.
3. When the teams in the last three files draw lots, select the teams first, and then determine the positions of the teams in the group (2, 3, 4).
4. The principle of avoiding the same continent will be adopted in the whole lottery process, that is, teams from the same continent cannot be in the same group, except Europe, but each group cannot exceed two European teams at most.