The Champions League is not limited to teams from the top five leagues. Europe's top five leagues, namely the Premier League, La Liga, Serie A, Bundesliga and Ligue 1, are the five strongest leagues in Europe, but teams from these leagues are not the only ones who can participate in the Champions League.
In fact, qualification for the Champions League is diverse, covering various leagues across Europe. In addition to the teams from the top five leagues, teams from other European leagues can also participate in the Champions League as long as they qualify. For example, strong teams in other European leagues, such as the Eredivisie, the Soviet Premier League, the Danish Premier League, and the Spanish Premier League, can sometimes reach the Champions League.
There are two main categories of qualification for the Champions League: direct entry and qualification through play-offs. Before the start of each season, UEFA decides which teams will participate directly and which teams will qualify through the play-offs, based on the results and rankings of each team in the previous season.
For teams that participate directly, it is usually teams from the top five European leagues, as well as some strong teams from other European leagues. These teams will qualify directly for the Champions League based on their performance and ranking last season.
For teams that need to qualify through the play-offs, it is usually teams from other European leagues. These teams will need to play in the play-offs first, and if they can win, they will be able to qualify for the Champions League.
In short, the Champions League is not limited to teams from the top five leagues. As long as they qualify for UEFA, teams from all over Europe have the opportunity to compete in the Champions League. This reflects the breadth and inclusiveness of the Champions League, and also gives more European teams the opportunity to showcase their strength and talent.