Why students abroad fear the Hong Kong Security Law – and BBC report on why the Chinese Communist Party has become a threat to academic freedom in UK universities.
The national security law that China has imposed on Hong Kong is already curtailing speech in the territory – but it is having a far wider impact.
It applies to everyone in the world, everywhere in the world. People who break the law can be prosecuted if they go to Hong Kong.
That has brought an unexpected headache for foreign universities, which are scrambling to work out how to protect their students from saying and writing things that might later be used against them.
Foreign institutions renowned as bastions of free speech are having to deal with Chinese censorship.