according to relevant information, Zoucheng was not unsealed on September 9th. Zoucheng was unsealed on September 4th. Zoucheng, Jining currently belongs to: low-risk area. Generally, it can be unsealed in 14 days, but it depends on whether there are new cases in the closed community. In the medium-risk areas, we should implement "external defense input and internal defense against proliferation", restore normal production and living order in an orderly manner as soon as possible, organize employees to return to their posts in an orderly manner, guide employers to strictly implement disinfection, ventilation, temperature measurement and other requirements, reduce personnel density, reduce personnel gathering, strengthen personnel protection, eliminate potential risks, and achieve simultaneous progress in epidemic prevention and control and enterprises' resumption of work and production. High-risk areas are subject to "internal non-proliferation, external export prevention and strict control".