You are correct. We are considering filing the I-131 so that she can join me in China while trying to wait out the AOS process, but don't know if we want to wait that long. We are also worried that even if she gets the greencard, she could be deemed as having abandoned it if we are both living and working in China. I am trying to figure out if she can keep her PR status if we take appropriate measures to maintain a minimal presence in the US, but I'm hearing that it is hard to determine. We would like to avoid having to go the DCF route when we eventually decide to return to the US, but in case we do withdraw our AOS or lose PR status, I would like to cover my bases.