This photo from the China Pavilion at the 1982 Knoxville fair captured something that has long irritated me about this and the China operation at the 1984 New Orleans fair. You're probably asking "What could be so bad in that shot?"
Almost everything in both those pavilions was for sale. Now, I know that most pavilions have gift shops, but this was different. The exhibits themselves were for sale. Think how underwhelming it must have been to realize you weren't looking a priceless artifacts from years ago, things you would have had once gone to China to see in person. Instead, there were price tags all over and signs saying "All exhibits are for sale." It wouldn't have been the same special sort of experience, would it? Anyway, that's just my opinion. And it wasn't even for sale.