dui, 是疯子的疯子. My Chinese name is Feng Mai Ke but a different feng(2nd tone, sorry, don't have Chinese input on this computer). Anyhow, I kept mispronouncing it, using the 1st tone. It actually kind of fit, so my Chinese friends just started calling me 疯子 and it stuck.

Your story is pretty simlilar to mine. I studied Chinese here in the U.S. and then decided to do a summer program of intense language study at Fudan University in Shanghai. After that summer I had to come back to the states for 6months to finish my last semester and get my B.S., but after graduating went back to Shanghai to continue my language studies.

During my first summer at Fudan I met a lovely, and very young(actually the youngest in Fudan's history), professor. I was a bit older than most of my peers, she was younger than all of her's, and we started spending more and more time together outside of class. Well, one thing led to another and now I have Chinese in-laws to deal with. We had originally planned to stay in China, since she had no desire to come to the U.S., but one thing led to another and after a year or so ended up back here in California . The company my wife works for now would love to re-locate her to Beijing though, so we are really considering going back for at least several years. It would be a great experience for our daughter and with my wife's salary we could live like royalty in China.

Oh well..I rambling now. Better get back to work