First of all, the group is good at finding the breakthrough point when promoting. Their makeup, hairstyles and some stage styles can be improved. Although most groups take this as a selling point, the expressive force of this group is more profound. They are very good at showing a sense of balancing nuclear power. There are many wonderful places in the song, and most of the lyrics express the psychological state of young people. I believe many fans are attracted by the important meanings in the lyrics.
Secondly, it is because enterprises know how to operate very well. Although the individual ability of the group has been well known to the public, without superb publicity skills, netizens can't find its advantages through normal channels. So even if they are not in Korea, people can still find the group's advertising or commercial resources, which increases many opportunities for them to be seen. They look rich, plus some difficult dance skills. It is hard for people to ignore such a style.
In addition, it is precisely because of their music creation that the predecessors in the circle also appreciate it very much. Especially some European and American artists, who like the tenacity of the group very much, will publicize it when they send songs. These European and American artists have a huge number of fans, and after seeing the idols forwarded, they will spontaneously start to understand the works of the group. Therefore, they can have traffic and do not need to repeat hype.