First, the turn-based and goal-scoring systems in the Champions League.
1, the second leg of the Champions League means the second leg, and the Champions League means playing home and away. The second round is the first round, and the football match will be home and away. In the two rounds, there will be a game at each home. The second round is the next round, and the two sides change their home and away games.
2. The Champions League group stage is a two-wheel system, that is, one home and one away game. Then the top two in the group appeared. If there are two teams with the same points, it depends on the other team's record; And so on. Entering the knockout stage is also home and away.
3. The reason is simple. The Champions League is a two-round knockout, each playing a home game and an away game, according to the scores of the two rounds. The World Cup is a tournament system, with no home and away games. The final of 1/8 is the deciding game.
4. The Champions League knockout is a two-round home and away elimination system, that is, each team plays one home and one away, and the quota is determined according to the winning and losing relationship and goal difference of the two games. The first game is called the first round, and the second game is certainly called the second round.
Second, the football turn-based system
1, which is stipulated by UEFA. In the knockout round, there are two rounds, home and away, to reduce accidental factors and ensure the level of the promotion team. The two teams selected in this way must have hard power. Then let the two "strongest teams" fight to the death to decide the outcome. Although there are accidental factors, this is the charm of football.
2. Double circle system. Korea Football Association Cup adopts two-turn system to decide the final champion. Professional football matches in Korea include Korean Professional Federation (K League), Korean Football Association (Cup) and Korean League Cup (Cup) amateur matches: Korean National League (K2) and K3 League. Since then, the number of teams participating in the league has been increasing.
3. Not necessarily. Depends on what criteria you use to evaluate. If you compare the energy invested by the offensive end with the goals scored, the attack is not necessarily easier than the defense. Let me give you an example: the strong team beat the weak team, and the weak team knew that its strength was insufficient, put out an iron bucket array, defended for 90 minutes, and finally played 0-0.