Only In China 1 - Smile Campaign for Beijing Olympics

In China, thousands gathered at the Great Wall to practice smiling for the Beijing Olympics. Volunteers encouraged the nation to welcome foreigners with smiles, promoting the slogan 'A smile is Beijing's best business card.' The event featured a Chinese-style Mexican wave, emphasizing the universal language of smiling and eye contact.

What humorous observation is made about the cameraman during the event?

What lesson does the text convey about communication?