Reports indicate that the regime in Beijing are jamming shortwave broadcasts from the BBC World Service.

Statement regarding interference to BBC World Service transmissions - http://www.bbc.co.uk/mediacentre/statements/shortwave-jamming.html

BBC condemns China's 'deliberate' jamming of World Service broadcasts - http://www.guardian.co.uk/media/2013/feb/25/bbc-condemns-china-jamming-world-service