No need. According to the requirements of civil rights epidemic prevention work, as of September 26, 2022, Nanjing and civil rights areas were verified as low-risk areas. According to the epidemic prevention policies of the two places, it is only necessary to hold a 48-hour negative nucleic acid certificate of Nanjing Huimin right if it is not isolated. When the epidemic is imminent, be sure to wash your hands frequently, wear a mask, go out less and don't gather.