I read this thread and did not see the answer to this question:

ORD -PVG (stopover for less than 48hrs)-(separate ticket to BKK-PVG)-PVG (stopover less than 48 hrs) - ORD

If I present my etickets for
ORD-PVG-ORD
and BKK-PVG-PVG
will I get in trouble with not getting a visa because I am transiting through Shanghai twice within a span of 6 days but staying in Shanghai less than 48 hrs every time.

If I am good to do the above, what documents besides tickets, US passport, and Chinese embassy ruling would I need to present in ORD, PVG, BKK


Thank you very much for your insights