I don't know if this is the same article I commented on earlier, but the Health Kit QR code is unnecessary if one already has registered with the Heath Kit.
If one needs to show the Health Kit green pass, just run the app.
If the baoan insists that the QR code must be scanned, just fake scan the QR code and show him the results from the app. Works for me everywhere the QR code is posted upon entry.
FYI I am a foreign devil.