The ungrateful CPC fought a war with USA in Korea almost right after WW2 despite USA contributed most in defeating Japan and helping China.
Then CPC keep supporting the Fat Kim Dynasty shitting on Korean big time.
Someone had to be the point man for China. The fact that the US was ambivalent between Mao and Chiang is irrelevant. We created neither of them. They came from China, not US. So if there was a conflict between Chinese, of course we would want to work with both and see if there could be a unified China. Common sense and war time necessities said we could not recognize both. Even if we chose Chiang, we did it not out of spite for Mao but for common sense and war time necessities that said -- someone had to be
THE face for China.
Given how sorry was the state of the Chinese at that time, and I do not say that to be mean spirited, neither Chiang nor Mao was better than the other. The Chinese military after the Japanese invasion, if one is to be kind and broad with the label 'military', had German advisers to create its structures.
Sino-German cooperation until 1941 - Wikipedia, the free encyclopedia
But by the time the US tried to negotiate the factions of Mao and Chiang into a reasonably cohesive force, a US Army report had to be brutally honest about the typical Chinese soldiers.
HyperWar: US Army in WWII: Time Runs Out in CBI [Chapter 12]
As they march along they turn into skeletons; they develop signs of beriberi, their legs swell and their bellies protrude, their arms and thighs get thin. Scabies and ulcers turn their skin into a shabby cover of an emaciated body which has no other value than to turn rice into dung and to register the sharp pains of an existence as a conscript in the Chinese Army.
It did not matter if the Chinese soldier was with Mao or with Chiang. Since there were US representatives in both camps trying to make everyone work together, all Americans saw similar, if not identical, conditions. Someone had to be the point man for China given how weak and dispirited the Chinese military was at that time.
The Chinese members here take WW II Allies' selection of Chiang to be that point man for China as some kind of betrayal or at best a grievous strategic error in Asia when reality at that time told the American leadership it was a toss-up either way. The Chinese members here do not realize that Stalin already had Mao under thumb and without a representative on the Allies' council, Stalin would have done much worse than loot Manchuria. There was no guarantee that Stalin would elevate Mao to the council. Without US support for China via Chiang, neither Mao nor Chiang could have held one million Japanese troops in place and even regained some territories.
So yes, it is irrelevant that Mao won the Chinese civil war. In the greater scheme of things, Mao should have stayed inside China and rebuild the country instead of waging a war against an ally.