Hello! I used the TWOV with no problems in November 2017 - was flying from LAX -> PVG -> HKG and was only staying in Shanghai for 3 days.
I'd like to do the same thing for a trip in April and wanted to make sure there were no changes. Flying from LAX -> PVG -> HND this time. I'll be in Shanghai for less than 72 hours.
Appreciate the help! Thank you very much.