I also had the interview with the adcom in Beijing. The interview was friendly and conversational. The admissions director had clearly spent a lot of time reviewing my file, and the interview seemed much more focused on whether or not he could picture me at Duke. Fuqua makes a big point of finding people who can fit in with their Team Fuqua philosophy, and I thought that really came through in the interview.
We had an afternoon session with Q and A with alums. All in all, it was a really nice event. I was very impressed with the strengths of the other candidates with whom I spoke and pleased to see that people from across many different fields had received invites (off the top of my head, I remember a dentist, a sports marketing professional, a manufacturing professional from an SOE, a handful of auditors from the Big 4, not to mention finance and consulting types).
Like the person in Shanghai, I was struck by how many people had received interviews (19 prospective candidates came to the Q and A session, and there may have been others who couldn't stay).
Good luck to everyone who interviewed!