25. According to the query Yancheng epidemic prevention and control bulletin shows that as of December 9, 2022, Yancheng cumulative diagnosis of 184, there are 25 medium and high risk areas. Yancheng, prefecture-level city under the jurisdiction of Jiangsu Province, type II large city, city in the central area of the Yangtze River Delta, located in the eastern coastal region of China, eastern Jiangsu, east of the Yellow Sea.