1 and 32 teams were divided into eight groups by lottery, and the top two in each group were qualified to continue to participate in the second stage competition (elimination system). In the first stage of the group stage, the single round robin system was adopted, and each team scored 3 points for winning one game, 0 points for drawing one game 1 point, and 0 points for losing one game. After all the group matches, the first factor that determines the ranking of each group is the points that each team got in all three group matches;
2. The second stage is a single knockout. The winner enters the next round and the loser is eliminated. If the game is tied within 90 minutes, there will be 30 minutes of overtime. If there is a tie after extra time, there will be a penalty shootout until the winner is decided.