The two real minorities are the Uyghurs and the Tibetans and China is actively repopulating their lands in order to effectively assimilate them as they have largely done with other minorities. Otherwise, we are seeing the usual artifact of education or its lack and past government intentions.
Putting aside the ethics of it all what is necessary going forward is a central policy of equal opportunity and mutual respect led through the education system. Nothing else works as the Han will naturally lord it over a non Han if tacitly allowed by government complacency.
Thus we have a note from an eye witness such as this one that pretty clearly spells out the current situation. Its is not awful but it is also a long ways from been good enough. Good enough may well be possible in China and a future policy of multiculturalism will placate all provided they all speak Chinese and have similar opportunities. That is the possible bottom line.
What do Chinese minorities think of the Han?