How to determine which team will qualify in the group stage?

In the group competition, the points system is adopted to determine the team of each group. According to the team's winning, drawing, losing and drawing results, plus different scores, the top teams qualify.

Group match means that when there are too many teams in a match, several teams are evenly assigned to play in a fair way, and then the winning team plays again until the final.

For example, in the final stage of the World Cup, 32 teams are divided into 8 groups by lottery, with 4 teams in each group, and the top two teams in each group will qualify for the semi-finals. After entering the semi-finals, 16 teams decided the schedule according to the established rules, no more lottery, and then single elimination matches were held until the champion was decided.