Aerial photo taken on Aug. 4, 2021 shows the empty streets in downtown Yangzhou, east China's Jiangsu Province. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
A citizen receives test at a nucleic acid testing point in Yangzhou, east China's Jiangsu Province, Aug. 7, 2021. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
Citizens wait in line at a nucleic acid testing point in Yangzhou, east China's Jiangsu Province, Aug. 7, 2021. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
Aerial photo taken on Aug. 7, 2021 shows a view of the Dongguan Street, a scenic spot in Yangzhou, east China's Jiangsu Province. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
A staff member stands guard at Yangzhou station in Yangzhou, east China's Jiangsu Province, Aug. 6, 2021. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
Merchants transport vegetables at a wholesale market in Yangzhou, east China's Jiangsu Province, Aug. 4, 2021. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
A police officer checks passengers' health codes at a main road of Yangzhou, east China's Jiangsu Province, Aug. 6, 2021. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
Citizens buy foods at a supermarket in Yangzhou City, east China's Jiangsu Province, Aug. 4, 2021. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
A citizen receives test at a nucleic acid testing point in Yangzhou, east China's Jiangsu Province, Aug. 5, 2021. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
A community worker packs necessities for residents at a community in Guangling District in Yangzhou, east China's Jiangsu Province, Aug. 8, 2021. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
Staff members prepare meals for the senior citizens at the kitchen of Wenfeng Community in Guangling District of Yangzhou, east China's Jiangsu Province, Aug. 6, 2021. Yangzhou now has one high-risk area and 75 medium-risk areas for COVID-19, and the city authorities have strengthened the prevention and control measures to halt the spread of the coronavirus. (Xinhua/Li Bo)
