A policeman checks a vehicle in Xi'an, northwest China's Shaanxi Province, Dec. 27, 2021. Xi'an has strengthened its anti-epidemic measures and implemented the strictest closed-off management starting from Monday to curb the spread of the latest COVID-19 resurgence. (Xinhua/Tao Ming)
Aerial photo taken on Dec. 27, 2021 shows policemen checking vehicles in Xi'an, northwest China's Shaanxi Province. Xi'an has strengthened its anti-epidemic measures and implemented the strictest closed-off management starting from Monday to curb the spread of the latest COVID-19 resurgence. (Xinhua/Tao Ming)
Aerial photo taken on Dec. 27, 2021 shows an empty square in Xi'an, northwest China's Shaanxi Province. Xi'an has strengthened its anti-epidemic measures and implemented the strictest closed-off management starting from Monday to curb the spread of the latest COVID-19 resurgence. (Xinhua/Tao Ming)
Residents take nucleic acid tests in Xi'an, northwest China's Shaanxi Province, Dec. 27, 2021. Xi'an has strengthened its anti-epidemic measures and implemented the strictest closed-off management starting from Monday to curb the spread of the latest COVID-19 resurgence. (Xinhua/Tao Ming)
A resident takes a nucleic acid test in Xi'an, northwest China's Shaanxi Province, Dec. 27, 2021. Xi'an has strengthened its anti-epidemic measures and implemented the strictest closed-off management starting from Monday to curb the spread of the latest COVID-19 resurgence. (Xinhua/Tao Ming)
