Lining up to do nucleic acid is a normal practice, if you are asked to do nucleic acid, there are several possibilities, according to the big data analysis, you may be living in the same neighborhood with the new crown confirmed rashes, or at the same time to the same place of activity, or confirmed rashes have been to the neighborhood or countryside where you live, or you are from a high-risk area to return to the general, according to the big data, you may be confirmed rashes with the person who has had a close contact or there is close contact with the possibility, in order to prevent the spread of the epidemic, so the appointment to do nucleic acid is a precautionary measure, does not mean that you have a problem. Possibly, in order to prevent the spread of the epidemic, so about to do nucleic acid, about to do nucleic acid is a precautionary measure, does not mean that you have a problem, please cooperate with the requirements of the epidemic prevention, do a good job of nucleic acid testing, for the national epidemic prevention to do their due diligence.