Conghua district of Guangzhou, capital city of South China's Guangdong province, conducted massive nucleic acid testing for all residents from June 5 to 6. With the collective efforts of medical workers, volunteer Party members and government staff, as well as police officers, the work was completed with order and efficiency. The results of the testing were all negative.

A Conghua resident undergoes nucleic acid testing at night. [Photo provided to chinadaily.com.cn]

An infant in Conghua takes the nucleic acid testing. [Photo provided to chinadaily.com.cn]

The police and volunteers help the elderly in a queue for the nucleic acid testing. [Photo provided to chinadaily.com.cn]

A team of volunteer Party members get ready to work at a nucleic acid testing site. [Photo provided to chinadaily.com.cn]

Volunteers from the education department of Conghua help keep order at a nucleic acid testing site. [Photo provided to chinadaily.com.cn]

A medical worker's hands turn wrinkly after being soaked in his own sweat for more than 10 hours. [Photo provided to chinadaily.com.cn]

Medical workers take a short break during the night shift of the nucleic acid testing. [Photo provided to chinadaily.com.cn]