Hey Bob. Things have likely changed a lot since 1991. I travelled Vietnam and Cambodia last year and the only advice I can give is be wary of taking photos of military personnel, police or anything around the Ho Chi Minh mausoleum.


However, the OP's heading to China so it may be different. All the same, I know that military personnel aren't always happy about being photographed. My advice would be to just ask before taking shots of anything you're unsure about.


At the end of the day, the whole world's caught the travel bug in the last 5-10 years so I'm certain China's people have become used to being on the pointy end of a lens.


Enjoy the trip, China's definately on my to visit list.


Ben.