Applecare will (allegedly) work in China, but the actual service *****.
They outsource to 3rd parties, and the 3rd parties do whatever the **** they want.
So, if you have issues, you'll be having fun and games with the "authorized" support vendors.
Expect weeks delays for parts, charges that shouldn't be charged. Parts mysteriously going missing, or getting swapped out etc.
I've had all of the above happen to myself, and other clients.
Thats for Shanghai though, Beijing might be better.
If I was you, I'd hope that nothing broke, or you are in for a world of hurt.