What kind of competition does badminton have to win to become a world champion?

As the name implies, you can be called a world champion if you win the international open, but because of the scope of the competition, everyone thinks that you don't have much gold in winning the Korean open or the French open. If you want to be recognized in strength, you still need to have the title of champion in major competitions, such as Olympic Games, World Championships, All England Tournament and so on.