Originally Posted by
HKtraveller
If you are a US citizen and exit HK at Lo Wu without a China visa it would be your only option as you would be denied entry to China and probably in for an interesting experience in terms of vibes. Not sure if you'd be fined though.
Well that's the question, isn't it? Can you do this - exit Hong Kong and then just re-enter after a few minutes of looking around in no-man's land - or are the two directions segregated such that you couldn't do so without getting someone to let you through a special door?