In Guangdong province, manufacturing centre Guangzhou has seen a spate of cases over the past week that has closed some districts.
Over the past week, authorities raced to get a handle on rising cases in Datong, Xining, Nanjing, Xian, Zhengzhou and Wuhan forcing temporary lockdown measures of some neighbourhoods.
Datong, which recorded 288 cases from Oct. 27-30, has enforced stricter isolation and management of hotels, key industries and its railway.
As winter nears, northern cities, particularly those close to international borders, are seeing higher case numbers and could face new curbs.
Mudanjiang in Heilongjiang province, bordering North Korea, extended the temporary lockdown of some areas, according to local media reports.