The first is to determine the seed team, which is the first team. The reference standard is the results of the last two World Cups, the record of this World Cup qualifier and the real-time world ranking.
The second is to determine the second, third and fourth teams, basically not considering the strength, but considering the region, the second European team, the third Africa, South America, the fourth Asia, Central and North America. The principle is that no three European teams or two other teams are in the same group as the association team.