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This has probably been discussed before, but what would be the outcome of a Sino-German alliance versus the OTL German-Japan alliance?

Does the KMT stay in power and drive off the CCP? Is it able to fend off the Japanese? If China is not able to conquer as much of Chinese as it did OTL, would it still attack Pearl Harbor (assuming the oil in Manchuria isn't found) to "cripple the USA?" Also consider that the attack on Pearl Harbor was partly the result of Japanese egoism, which may not have been as great if it did not do well in China.
Maybe China would become a superpower later on? Or would it go on the warpath and try attacking the USSR or something?

Does this change anything in the West? I can't really think of much, except that if Japan is not so potent then Germany could be defeated easily and amybe even the A-Bomb would be used in Germany.
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