Win a game with 3 points, draw 1 point, lose a game without points. The promotion rule is that the top two in each group and the two third places with good grades advance to the quarter-finals, and the promotion priority order is 1, with points; 2. Target difference; 3. Target number; 4. Confrontation record; Step 5 draw lots
After entering the knockout stage, if the final of 1/4 draws within 90 minutes, there will be two overtime games of 15 minutes each. If overtime fails to tell the winner, the penalty will be decisive.