Renmin University of China carried out nucleic acid testing on staff and students in Beijing on March 13. China is planning to set up testing stations within a 15-minute walk of each other in its major cities in order to control the pandemic. Photo: VCG

Residents take Covid-19 tests at booths set up outside Yonghegong Lama Temple in Beijing on Monday. The city requires residents to have a negative Covid-19 test within 48 hours to enter public spaces. Photo: VCG

A nucleic acid testing booth on April 28 in Hangzhou, East China’s Zhejiang province. From 8 p.m. Tuesday to 8 a.m. Wednesday, the city reported 11 asymptomatic infections, detected among people already in centralized quarantine. Photo: VCG

A nucleic acid testing booth decorated with disease control personnel appears in Shanghai on Tuesday. Shanghai reported seven further deaths and 1,487 local cases on Tuesday. Photo: VCG

Disease control personnel prepare for Covid-19 tests at a plastic-covered booth on April 13 in Jilin city in Northeast China. Photo: VCG

A testing booth covered in advertisements for strawberries on March 28 in Shenyang, Northeast China’s Liaoning province. The city reported six asymptomatic infections on Tuesday. Photo: Yu Haiyang/China News Service, VCG

Disease control personnel use a tricycle as a Covid-19 mobile testing point on Jan. 15 in Zhengzhou, Central China’s Henan province. The city reported 26 local cases between Sunday and Monday. Photo: VCG

A mobile laboratory for nucleic acid testing made its debut in Beijing in July 2021. Photo: VCG

A medical worker in a nucleic acid testing vehicle in August 2021 in Wuhan, Central China’s Hubei province. Photo: Zheng Ziyan/China News Service, VCG

A pandemic prevention team tests residents on April 7 at a highway crossing in Huai’an, East China’s Jiangsu province. Photo: VCG

Residents queue for nucleic acid tests Monday in Nantong, East China’s Jiangsu province. The province reported 49 local asymptomatic cases on Tuesday. Photo: VCG

A woman takes a nucleic acid test in November 2021 at a testing booth in Yanta district in Xi’an, Northwest China’s Shaanxi province. Photo: VCG