Qin' an became low-risk on September 4. Notice of Qin 'an County on adjusting the epidemic risk area in COVID-19 according to the query data. From September 4th, 2022 14: 00, Building 9, Zone B, tsinghua campus, Xingguo Town was changed from a medium-risk zone to a low-risk zone. After the adjustment, there are no high-risk areas in the county, and the county implements normalized epidemic prevention and control measures.