30 minutes from one plane to another? Anything is possible at a Chinese airport!
No one from our group of twelve had problems at any airport security checkpoints or got even close to being sent back to Prague on our long journey to Cleveland through London and Chicago. This was especially surprising seeing our diverse nationalities, religions, frustrating visa requirements or the confusing nature of our university trip that required a tourist visa rather than a student one. Many of us were sweating bullets over the possibility of having problems with our transit visa in London and about the intimidating officers at the U.S. passport control. Ironically enough, those were only parts of the entire journey that actually went through as planned.