Beijing says US has 336 biological laboratories in 30 countries, including 26 in Ukraine.

China - “The US has 336 labs in 30 countries under its control, including 26 in Ukraine alone. It should give a full account of its biological military activities at home and abroad and subject itself to multilateral verification.“

https://www.stvincenttimes.com/beijing-says-us-defense-department-controls-336-laboratories-around-the-world/
https://www.globaltimes.cn/page/202203/1254330.shtml

Per Bloomberg, this is a conspiracy: https://www.bloomberg.com/news/articles/2022-03-08/china-pushes-russia-conspiracy-theory-about-u-s-labs-in-ukraine