Why won't the Chinese public speak on camera?
Asking members of the public to give their opinions on issues - or vox-pops, as they are commonly known - are a staple of the journalist's trade.
But in China, most people asked questions on the street are reluctant to comment.
Many are wary of talking on camera because of the historic fear of reprisal by the authorities.
This is what happened when the BBC News team in Beijing tried to gather views on one recent issue.
- From the section Asia