Why are there no epidemics in Guangzhou and Zhuhai?

The epidemic prevention and control measures are good. Zhuhai is a prefecture-level city in Guangdong Province, located in the southwest of the Pearl River Estuary in Guangdong Province. According to official website, as of September 22nd, 2022, the epidemic prevention and control center in this region has conducted strict inspection on foreign personnel in this region, and the people in this region have actively responded to the call for nucleic acid detection, and there are good epidemic prevention and control measures, so there will be no epidemic.