This has some great clusterfuck potential, like anything that happens in SE Asia. If Uncle Ho isn't fully on board with the whole communism thing, and if the Guo Min Dang is willing to help him in his own nationalist endeavors, they could potentially kick the French out, or at least into the south in Cochin-Chine, then set up a redoubt for both the Chinese and Vietnamese Nationalists. Being allied with the GMD could mean aid to the Viet Minh from the Americans. If there are still British forces in Indochina all this could develop into a proto-Suez Crisis with the old colonial powers of France and Britain trying to return to the status quo ante-bellum of French control. The Americans would oppose this on principle, like at Suez, but this time they've also got actual allies on the ground in the form of the GMD and VM. Looming over all of this is Red China, and still at this point, the USSR.