I don't know where u get that rubbish info from?
Mandarin is used long time ago(800yrs a go) in China as official
language of all imperial court. Ming dynasty start it(A true Han
dynasty) The only barbarian languages from north is
Mongolian(nearly wipe out) and Machurian(complete wiped out)...
Have u heard from these 2 barbaric languages? Their tone are
totally different from Mandarin... Mandarin wipe out these barbaria
languages.