Oh, I see.
Though I expected the Cantonese flag to be little more than the ROC flag. But then, it could be similar. After all I also tend to view Canton as something of China in the early 1930s era.
'Republic of Tang' [Canton] would be nice. Tang is the Chinese term for southern Chinese Han actually refers to northern and central Chinese.
Maybe this could be of help.
http://en.wikipedia.org/wiki/Norther...southern_China
Hope you do modern China, soon. I imagine it to be something of a cross between Mao's China and Deng's China but much weaker.