It is necessary to proactively report and provide proof of negative nucleic acid test within 48 hours. According to the query on the Lixin epidemic prevention and control policy, you need to actively report to enter the normalized prevention and control area, and a negative nucleic acid test certificate within 48 hours is enough. Huangqiao, Xiangcheng District, Suzhou on October 22, 2022, belongs to the normalized prevention and control area. Therefore, it is necessary to proactively report, and a negative nucleic acid test within 48 hours is sufficient.