East China's Yangzhou City in Jiangsu Province reported a total of 346 locally transmitted COVID-19 cases since July 20 in the latest wave of the resurgence of COVID-19.
The city has carried out four rounds of all-inclusive nucleic acid testing.
More than 100 motorbikes and 10 police cars have been arranged by traffic police to help transfer the nucleic acid test samples.
Yangzhou now has two high-risk areas and 83 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus.
Produced by Xinhua Global Service