Thanks for the feedback, guys.
Since I have two road bikes and a mountain bike, and don't really need a folding bike at home, I've decided to rent a bike for touring when I'm in Korea.

I plan to check out a few bike shops in both Korea and China, to see what folders are available there (Birdy, Pacific Cycles, Tyrell FSIR). If I see some that I find especially cool, I'll be sure to take pics and post here.