Originally Posted by
Majuki
I'm in Shenzhen now. I tried to use Google Pay at McDonald's with my CSR (since it said Apple Pay was supported) but the payment failed. I tried QuickPass with the physical UnionPay card, and I'm happy to report that it worked! The Shenzhen Metro also advertises using QuickPass as an open loop payment system, but I sort of want someone else to be the data point for that one.

I used the QuickPass on the Shenzhen Metro on Tuesday and it worked just fine - only certain fare gates work - they're red and have a "UnionPay QuickPass" label in English and Chinese, like the one in the right of the picture. Just tap your card on the sensor on the *top* of the fare gate where it says "slide" when you enter & exit the station. (There's a QR code reader above the green arrow perpendicular to the ground - that's not the one!)
After you leave the station the fare will be calculated and your card will be billed. Mine posted like this:
01-16-2019 SZMOH GUANGDONG CHN purchase CNY 2.00 Card#xxxx. USD 0.30
By the way, the reason you couldn't use your Apple Pay at McDonald's is because Apple Pay in China is only for UnionPay cards...and the American ICBC card can't be added to Apple Pay. I've emailed them asking to have that feature enabled... their reply didn't seem promising.