I'm curious about how one goes about ensuring that a taxi driver will use the meter. We'll be travelling to China in a month or so, and don't speak any Mandarin. Do you just point to the meter, and if they don't turn it on get out of the taxi?

Any advice you can give is greatly appreciated. (We'll be in all the usual first-time places: Beijing, Xi'an, Yangshuo, Shanghai).

Thanks!
Ceiba