China has built a massive Covid-19 isolation center made up of row upon row of temporary buildings over a vast expanse in the country’s south, as officials continue to treat the virus as a threat that needs to be stamped out.

Drone footage shared on Douyin, Tiktok’s twin service in China, shows scores of what appear to be pre-fabricated structures similar to shipping containers lined up in a clearing surrounded by forest. Several social media users said the video showed a Covid quarantine facility in Guangan city, Sichuan.

Under China’s Covid Zero policy, everyone infected with the virus and all their close contacts must go into centralized isolation facilities for at least a week. Provinces were told in March to build two to three of the so-called makeshift hospitals as a way of quashing transmission in the community.

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