Shenzhen on the 757 when I was still current, then (you are going to laugh) Tianjin when I was requal'ed on the Airbus.
I never made it further than e-mails to the recruiting agencies. What stopped me was a change in our leave of absence policy and the fact that I was approaching 55. The crazy ATP written and the delays in training were another factor. I had an interview set up at Korean that I would have taken before a China contract.
I'm glad you had an interesting experience. I think it's good to get out and push your personal limits sometimes. We had a few guys go to Deer and a couple of other carriers. They liked it but were ready to come back.