The spread of COVID-19 has highlighted the need for nucleic acid testing labs. The membrane structure of Huo-Yan Air Laboratory creates a modular negative pressure environment. The lab is equipped with smart devices and a fresh air system to achieve the conversion of positive and negative pressure. Low in construction cost and energy usage, the lab takes only a few days to be fully operational, testing over 10,000 samples per day. By testing millions of people, the lab helps targeted screening and alleviates the social crisis.