Originally Posted by
NotHamSarnie
I'm still confused (and I did read the wiki). Someone said x - pvg - hkg - pvg - x doesn't work. What if the 2nd stop in pvg is just an airside transit?
I am doing <US> - PVG (2 nights) - SGN - PVG (no stay) - <US>
with the US - PVG - US on one ticket and the PVG - SGN - PVG on another. It seems to me this satisfies the above requirement but I have a feeling it won't work for TWOV. Will it?
This is fine, as long as long as all flights in question are nonstop to/from SHA and VN/US. (Additional stops in the PRC won't necessarily invalidate your itin, but they will trigger the 24 maximum on the transits in question.)
In response to the bolded part of your post, airsdide transists are no different from landside transits.