20 1 1 AC Milan lost the Champions League knockout.

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Team: There are 32 places in the group stage, of which 16 is directly allocated to the defending team, and 15 is the highest ranked champion and runner-up in Europe. According to the past performance of European competitions for many years, the European Football Association makes statistics and sets the ranking for European leagues. By the end of the 2005-06 season, the rankings of the nine major leagues in Europe were Spain, England, Italy, France, Germany, Portugal, Netherlands, Greece and Belgium. The champions of the nine leagues will directly advance to the top 32 of the Champions League, and the top six runners-up of the nine leagues will also receive this preferential treatment. Competition system: the competition is divided into eight rounds, including three rounds of qualifying, group competition, 16, semi-final, semi-final and final. Three rounds of qualifying, 16, semi-finals, semi-finals are all decided in the form of two rounds of elimination, using subjective and objective competition system; If the total number of goals scored by the host and guest in two rounds is the same, the visiting team's goal discount is calculated; If the winner is still undecided, it will be decided in overtime. There is no golden ball or silver ball system in overtime. The two teams must finish the first half and the second half 15 minutes in overtime, and the one with more goals wins. If the total number of goals in overtime is the same, the visiting team's goal discount will be calculated. If overtime is tied, it will be mutually beneficial. Thirty-two teams will advance from the qualifiers and the seeds of nine major leagues. The qualifiers will be divided into eight groups with four teams in each group. After six games, the scores are calculated, and the top two teams in the group score advance to the top 16. (If there is a tie, the qualifying seats shall be determined in the order of match score, match score difference, opponent score difference, team score difference and team score difference), and the group score is the first. /kloc-the top 0/6 events will be divided into eight groups by conditional lottery in the form of host-guest elimination system. Teams belonging to the same country will not fight, nor will the teams with the highest scores in each group. After that, the semi-finals and semi-finals will not be restricted by the above conditions until the two teams entering the finals are decided. Final: The final venue will be held in a neutral stadium, which can ensure that neither team has home advantage, and one game will decide the outcome. If it is tied within 90 minutes, it will be decided in overtime. There is no golden ball or silver ball system in overtime. Both teams must finish the first half 15 minutes in overtime. The team with more goals wins. If it is tied after extra time, it will win by shooting 12 yards.