Relevant information shows that Heze High-tech Zone was unsealed on August 15, 2022. By August 15, 2022, there were no new cases of infection in Heze for 7 consecutive days. On the 7th day, all personnel in the risk area completed a round of nucleic acid screening, all of which were negative and were reduced to a low-risk area. Therefore, Heze High-tech Zone was unsealed on August 5, 2022.