The BBC has this report here:
Beijing citizens have been told not to pick their noses, yawn or scratch their heads when talking to foreigners during the Olympics.
They have also been given a list of things not to ask overseas visitors - a list so exhaustive it could make conversation difficult.
Ordinary people have also been given detailed instructions on how to talk to disabled people during the Paralympics. . . .
Chinese Government on what Chinese people should say to foreigners during the Olympics
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