Although there are a lot of security guards, they are all superficial. For these security guards, they have not done professional security and emergency training. Otherwise, gangsters can't swagger forward. Even in this important activity, it is impossible to control the knives to enter the venue directly. For this incident, I think the organizer and the security department should take full responsibility.
Those responsible even have to bear legal sanctions, because their carelessness led to this situation. All relevant personnel will sound the alarm for this matter, and it can't be said that all fans can't get close to the stars, but this murderer, as a non-security personnel, gives me the feeling that his behavior is abnormal at first sight.
If you go on stage to interact with a star, at least bring gifts or flowers, but he doesn't. Instead, he hid his hand in his pocket. It is obvious that he has a weapon hidden in his pocket. If Yam Tat-wah's life is in danger because of this attack, I think every security guard will have a heavy burden in his heart. I hope the media can announce the motive of the murderer as soon as possible, and I also hope that Yam Tat-wah will recover soon.