Good grief, some of the things you claim Lux de Veritas is making me cry tears of laughter.
It is quite obvious your agenda is trying to separate Southern Han Chinese from Northern Han.
Minnan is a Sinictic language,with some Austronesian elements and no even if Taiwan is independent Southern Fujianese wouldn't all of a sudden declare independence from China.
Taiwanese don't have Malay blood,Taiwanese aborigines speak Austronesian and their phenotype vary drastically.
Don't confuse Taiwanese Han as mixed race unlike you.
While some may be maternally descended from plains aborigines you have to remember that Fujianese merchants and pirates mingled with aborigines even before Zheng Chengong set foot on Taiwan so these plains aborigines might not even be pure.
I've been to Quanzhou and Xiamen the people there don't look any different from the so called 本省人,so even with partial descent from aborigines it seems it was too small to make an impact.
Even my pro DPP grandmother still admits her ancestors are "Chinese" and never once in her life claimed that she wasn't Hua or Han,truth be told many DPP supporters scorn Taiwanese aborigines.
My grandmother's surname is 陳 tell me how that isn't Chinese
Plenty of Taiwanese identify as Hua they just don't see themselves as part of the PRC.
I admit I have plain aborigine ancestry,but its is 1/16 or smaller its would be ludicrous if I claimed myself as an aborigine ie White Americans claiming they are native American because they have some Cherokee,Sioux etc blood.
When I visited China the only difference was that I was taller then most of my relatives,due to better nutrition other than that I don't look any different I still consider Fuzhou my 老家.
Why don't you read How Han are the Taiwanese Han? Genetic inference of Plains Indigenous ancestry among Taiwanese Han and its implication for Taiwanese for Taiwanese identity.
Again Han Chinese was never pure to begin with so you harping on the nomadic ancestry of Northern Han Chinese is moot.
Not to mention the nomads never outnumbered the native Sinitic populations of the Central Plains.
One of the greatest population decline occurred in the Three Kingdoms yet "Han Chinese" still outnumbered the minorities by a significant amount according to Wang Yu Min at the ratio of 19:1.
As for you Vietnamese nationalists we are not Baiyue we are Han.