What you said is too extreme. I came here three years ago and I am almost 60 years old. So far, there has been no recurrence. I have introduced it to my colleagues in the past two years. Go and see. Jiangmen Boshan is a three-story building. In addition, you said that there is no health permit. That is 100% impossible. You must not believe others' words. I suggest that you can personally reflect when you see a doctor. If you think it’s OK, then treat it; if it’s not OK, don’t treat it.