According to SVT Nyheter's survey, pages that Facebook describes as "state-controlled media from China" have on several occasions sponsored English-language posts with anti-NATO messages on the social media platform during the past month.
Sponsoring a post simply means paying to spread the word, and reach out to people who do not follow your page.
This is usually done with traditional advertising - but there is also a large amount of political content.
Ads with political content should be visible to everyone in Meta's ad library, even when the ad is no longer active.
The idea is that users themselves afterwards will be able to see which political messages a site has sponsored, how much money has been spent, and which groups in which regions the posts reached.
But the Chinese NATO ads disappear from the ad library, immediately after they are no longer active.
In an email to SVT Nyheter, a spokesperson for Meta, which owns Facebook, writes that the Chinese-sponsored NATO posts do not violate their advertising rules.
It is also written that "Facebook's authorization process" is not used in all countries, which means that political posts in all countries are not saved in the advertising library.
Watch SVT's review of the sponsored NATO posts in the video above, and hear Jojje Olsson tell what the Chinese state wants to achieve with them.