Reading this thread I was reminded of one corker of a story one student of mine told me last year in Dongguan.
This student had a nice, part time job working at the Hyatt in a new region of Dongguan near the uni we were at. This is a very swanky, bigwigs-would-go-there-to-hide kind of Hyatt.
The student told me one day at work a couple of weeks previously, there was a rather elderly man who came to her and asked for directions. Very nice man, she said, very polite and patient with her English. But she couldn't help him, no matter how much she tried, she didn't know where he wanted to go.
Man left. Fellow employees immediately ran to her and berated her for not helping him more, and 'don't you have any idea who he is??". She was completely clueless as to what she'd done wrong.
I asked her if she found out who he was. She didn't. I told her she should, I was so curious by her story and why she was so torn to pieces by her coworkers.
A couple of weeks later she came to me before class and told me she'd found out. Still with a rather clueless expression, she said to me:
"He's some man called....Warren Buffett???"