I'm not sure what prompted you to return your watch to China, but it’s something I would never have done. If you had issues with the movement a rep friendly watchmaker could have sorted it out for you. Yes it would cost extra, but you would also get a service out of it. If it was the case or bracelet, then ordering replacements might have been a better bet and Andrew would have given you a good deal.
But don’t lose heart just yet as it could still suddenly turn up. In any event - Good luck.