One particularly fruitful dialogue has been a lunch-sharing trend between high-school aged Chinese and American students across the digital divide, often to the horror of the latter.

“We only had three classes per day; ancient Chinese culture, fencing and lab experiments. We eat pizza for lunch and play cards. After school, we get milk tea and watch a play.

That's a tough roll to swallow, because in contrast to the American equivalent, Chinese school lunches look like heaven on a tray. Exchange Students The trend is a fascinating look at what happens ...