Were there ever any movements to create separate ethnic groups for the southern Chinese?

Futurist

Ad Honoris
May 2014
18,074
SoCal
#11
Standard Chinese (Mandarin) is based on the Beijing dialect (which was officially chosen in 1932) of Mandarin. Their are many dialects of mandarin, some are not mutually intelligible, which is why an official variant was picked.
Wasn't Mandarin the lingua franca of China ever since the 14th century, though?