In recent years, variety shows such as "Idol Trainee" and "Youth with You" have emerged one after another, which has aroused great concern. As a result, some male and female combinations were born, the most famous of which was the rocket girl. After their disintegration, several good women's groups appeared, among which TH9 and hard candy girls were the most concerned, especially TH9, which gradually became the facade of domestic women's groups.

The root cause of this situation lies in herself. She made very inappropriate remarks before her debut. When Yan Yu was a student, she was dirty, stained with all kinds of bad habits, and had tattoos on her back, just like her little sister. Naturally, it can't come to this. Later, some netizens exposed a video in which Yan Yu openly instigated fans: Don't secretly love, go to QJ if you like, prescribe medicine if you can't catch up, send nude photos if you turn your face, or go to jail if you are in a big deal.