The Communist China and warlord achievements do indeed have the same requirements of owning all Chinese cores. I am hoping for a hotfix soon because I do not want to fight the Allies in my own Communist China game (it should be as easy as changing the "own" requirement in the achievement file to merely requiring the player to control the province through occupation), but over the long term there needs to be a permanent solution for taking limited war aims without requiring a full capitulation from all major participants.
Anyway, if you haven't done so, I would recommend adding engineers and reconnaissance to your divisions. Support artillery is also good if you can manage it. Even as China I wouldn't go full quantity over quality. You want Japan's attacks to be as costly as possible.
Anyway, if you haven't done so, I would recommend adding engineers and reconnaissance to your divisions. Support artillery is also good if you can manage it. Even as China I wouldn't go full quantity over quality. You want Japan's attacks to be as costly as possible.