We defeated Japan and China is always an independent country, we didn't get independent from foreigners, India got independence from UK, but not China, China always has a government and even during Japan's heydays, it only mannaged to control less than one third of China and only the cities, not the countryside. Some part of Russia also was occupied by Germany but it didn't get the dependence from Germany, that's the first time I heard that China got independence from foreigners, it's such a big joke, Indians can never change their colonized mentality.
From the start to the end of the war ,the only official document China and Japan signed is this one.