What should I do if I don't receive the Notice of Qualified Patent Preliminary Examination?

First of all, I can tell you that it doesn't matter whether the notice is accepted or not. I just want to tell you that it has passed the preliminary examination. At the same time, there will generally be a notice to enter the substantive examination, and there will be no notice of payment. You need to pay for this directly, and you need to have a physical examination in advance within 3 years from the date of application. If you fail to pay the actual examination fee, you can pay it. Since this notice is of little use, it will be more troublesome to apply for a replacement. You can contact China National Intellectual Property Administration for advice.