Why did the COVID-19 epidemic suddenly unseal?

Why the epidemic suddenly lifted the ban is because the economy does not allow long-term closed management. According to relevant public information, China is still a developing country. In the three years since the epidemic, workers have been unable to work for a long time, and enterprises have been unable to operate, resulting in slower economic development in China than in previous years. Therefore, although liberalizing the epidemic prevention policy will increase the risk of infection to a certain extent, the advantages outweigh the disadvantages, which can enable those individual industrial and commercial households to re-drive the country's economic development.