Why is it difficult for Asian teams to enter the World Cup quarter-finals?

There are many reasons why it is difficult for Asian teams to enter the quarter-finals of the World Cup. On the one hand, compared with traditional football powers such as Europe and South America, there is still a certain gap in the overall technical level and physical fitness of Asian players. On the other hand, Asian teams are not as good as traditional football powers such as Europe and South America in tactical concept, and lack effective offensive means and defensive strategies. In addition, Asian teams also lack the necessary international competition experience and actual combat opportunities, and do not have enough opportunities to play against other strong teams. Therefore, in order to improve the performance of Asian teams in the World Cup, we must strengthen the accumulation of technology, tactics, experience and actual combat opportunities, and reform and upgrade the league and coach training.