Staff members work at the Huo-Yan Nucleic Acid Testing Laboratory in Beijing on June 23, 2020. It is a mobile, automated, high-throughput nucleic acid testing laboratory that can meet the daily testing needs of up to 30,000 people. [Photo by Feng Yongbin/China Daily]

Staff members work at the Huo-Yan Nucleic Acid Testing Laboratory in Beijing on June 23, 2020. It is a mobile, automated, high-throughput nucleic acid testing laboratory that can meet the daily testing needs of up to 30,000 people. [Photo by Feng Yongbin/China Daily]

Staff members work at the Huo-Yan Nucleic Acid Testing Laboratory in Beijing on June 23, 2020. It is a mobile, automated, high-throughput nucleic acid testing laboratory that can meet the daily testing needs of up to 30,000 people. [Photo by Feng Yongbin/China Daily]

Staff members undergo preparations at the Huo-Yan Nucleic Acid Testing Laboratory in Beijing on June 23, 2020. [Photo by Feng Yongbin/China Daily]