Generate a new health cloud code. This cannot be reused. Will anyone get away with it? Only in this way can the effectiveness of nucleic acid detection be guaranteed. This is also to curb the spread of the COVID-19 epidemic. Cut off effective channels. This shows that the country has done a lot of work in COVID-19 epidemic prevention and control. The QR code registered for healthy cloud nucleic acid detection is not a dynamic QR code, and the QR code generated after registration will be valid for a long time until it is used for nucleic acid detection. After the test is completed, the QR code will be invalid. If nucleic acid detection is needed again, you need to re-register and generate a new QR code for use. I hope I can help you.