I am 12 years old, and this is my second post. I’ll try and resolve this question.
The importance of China can be debated for a while. I agree with LeonidasBush in most cases. Through Japanese eyeglasses, China is the quickest way to put pressure on the Bear. Otherwise, the Japs could try and mount an offensive through SFE, Buryatia, and Yakut, which would require a lot of infantry. The Russians go first, and a logical move is to put infantry in Buryatia so the latter Jap method is stalled. Anyways, China is somewhat important, but for the sole purpose of helping out Hitler and kicking out the US. In fact, why is the US in China in the first place?
Through the US point of view, China is pretty defenseless since it is cut off from anyone else besides Russia. Neutral Mongolia and Himilaya are on two sides of it. If the US was actually able to amass troops in China before the Japs swooped it up, then capturing the Kwangtung would be a good idea. Unfortunately, the Japs have their turn before the US, and only a miracle can save China. Fortunately, Russia nd the UK both have turns before Japan. I don’t think that Russia would even bother to put fighters in Sinkiang or China on the first round. If China and Sinkiang fell into Jap hands, then Stalin would be hearing the warning bells. For now, the Russians are stuck on a CGF strategy. The UK might be able to help. The most viable solution would be to transfer materials from Persia, not India. Reinforcing the Sinkiang with multinational UK/US forces would probably be of use. Now, if I was the Japanese player, I would avoid capturing Sinkiang and overextending my lines in front of Russia. BTW, Russia might not put troops in Buryatia on their first turn, and just concentrate on Germany instead. If this happens, the Japs most likely would be able to capture at least two of the three listed above.
The importance of China cannot be fully resolved. You can only look at it through certain situations.