Is it necessary to isolate Fengcheng and Xinyu?

No need. As of September 22nd, 2022, according to the relevant information, there were 0 confirmed cases in fengcheng city, which belongs to the normalized epidemic prevention and control area. The epidemic prevention and control policy of Xinyu City is that people who enter the risk-free area only need to hold the nucleic acid test results within 48 hours, without isolation, but they need hotel isolation 14 days to enter the risk area.