The 23-year-old volunteer Xiao Yuanyuan reminds people to keep a safe distance of a “one-meter line” at a nucleic acid sampling site in Songlin community, Wansheng Economic and Technological Development Zone. Photo by Wang Luzhou/Visual Chongqing

In Guiyang Street, Dianjiang County, medical staff organize nucleic acid (COVID) testing. Photo by Xiang Xiaoqiu/Visual Chongqing

Medical staff is busy working in the nucleic acid (COVID) testing room of Fuling District People’s Hospital. Photo by He Qianjian/Visual Chongqing

A nucleic acid (COVID) testing is organized in the Kaizhou District Yunfeng Street Guanzi community. Photo by Li Mingwei/Visual Chongqing

Volunteers deliver supplies at Banshan International Community, Wenlong Street, Qijiang District. Photo by Chen Xingyu/Visual Chongqing

In Wenlong Street, Qijiang District, a volunteer is helping elderly people to do nucleic acid (COVID) testing. Photo by Visual Chongqing

Volunteers delivered vegetables to residential areas. Photo by Visual Chongqing