One confirmed COVID-19 case was reported in Tanzhou Town, Zhongshan on January 13. Zhongshan activated an emergency response and started citywide mass nucleic acid testing the first time.

For several days, all citizens have made concerted efforts and actively cooperated to get sampled and screened; Party members and officials, medical staff and volunteers in Zhongshan reacted swiftly to the commands and fought day and night in the front line of epidemic prevention and control. All citizens have jointly built a stronghold to fight against COVID-19.

Staff of the mobile testing lab at Tanzhou Town's International Blossom Palace residential community cheer up each other on January 17. [Photo by Yi Chengle]

Volunteers help each other put on protection suits at the sampling site in Vanke Cityscape community in South District on January 17. [Photo by Wen Bo]

A child receives a COVID test at a sampling site in South District on the morning of January 17. [Photo by Wen Bo]

Staff hold up signs to guide citizens entering the testing area in the Vanguard testing site, Taoyuan Community, East District on January 17. [Photo by Yu Zhaoyu]

A medical worker explains the sampling process to other staff at a sampling site in Qiwan Community, East District on the morning of January 17. [Photo by Yu Zhaoyu]

Two volunteers in Guzhen Town help a citizen lift a baby carriage at a sampling site on January 18. [Photo by Lu Xingjiang]

Epidemic prevention staff eat lunch at a sampling site in Nanlang District on January 17. [Photo by Wang Yun]

Citizens queuing up for NAT stay one meter away from each other at a sampling site in Changzhou Community, West District on January 16. [Photo by Wen Zhicheng]

A medical worker responsible for measuring temperature takes a break at the sampling site of Zhongshan Torch Industries Group on January 17. [Photo by Xia Shengquan]