Originally Posted by
sansan3
Ok, thank you. What about a 24 hour one? Sorry, I didn't specify, but that's what I meant. If still no, why? The rules technically say I could enter by any means and must leave by air
I think this will be possible in the future, but it isn't now. Insofar as "why" is concerned, many things about China are mysteries, but I'm guessing TWOV in HK is a low priority.