Originally Posted by
travelinmanS
It slows up the exit line as they question every Chinese citizen before they get to the machines. At least this has been my experience at both PVG and PEK this year. I haven’t seen it at SHA.
It's probably destination-related as well. SHA only flies to TSA, HND, GMP, HKG, and MFM, so the Chinese who fly these routes lean towards business travelers, or leisure travelers with more money.