A vendor waits for customers at Xinjiang Jiuding farm produce wholesale market in Urumqi, northwest China's Xinjiang Uygur Autonomous Region, Aug. 1, 2020. All farmers' markets in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, have been reopened with intensified COVID-19 prevention and control measures, local authorities said Monday. (Xinhua/Song Yanhua)

A vendor arranges peaches at Xinjiang Jiuding farm produce wholesale market in Urumqi, northwest China's Xinjiang Uygur Autonomous Region, Aug. 1, 2020. All farmers' markets in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, have been reopened with intensified COVID-19 prevention and control measures, local authorities said Monday. (Xinhua/Song Yanhua)

Workers load vegetables at Xinjiang Jiuding farm produce wholesale market in Urumqi, northwest China's Xinjiang Uygur Autonomous Region, July 29, 2020. All farmers' markets in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, have been reopened with intensified COVID-19 prevention and control measures, local authorities said Monday. (Xinhua/Song Yanhua)

A staff member checks the nucleic acid test results of personnel entering the Xinjiang Jiuding farm produce wholesale market in Urumqi, northwest China's Xinjiang Uygur Autonomous Region, July 29, 2020. All farmers' markets in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, have been reopened with intensified COVID-19 prevention and control measures, local authorities said Monday. (Xinhua/Song Yanhua)