Do you look non-Asian? If you do, you will never be fully accepted in Chinese society, as I've heard from a few white people that have lived in China. Even if you marry and settle down there and raise kids.
That said, mainstream Chinese society is basically Han Chinese, which is largely eastern China. There's a lot more to China than just the eastern areas. Xinjiang and Tibet are two areas of the PRC that are essentially occupied countries experiencing ethnic cleansing via dilution. The ethnicities that are the majority (or used to be the majority) in these regions are second class citizens in the PRC.
Insterestingly, I think by using China as an example is an example of an issue I've raised a few times in this thread. Countries as large as the United States and the US are hard to generalize about. There are many remarkably different regions flying the same flag. One of the issues the frustrates me is that Silicon Valley needs to be representative of the United States instead of California, neighboring states and those US states and cities that many California transplants come from. Large countries have utility insofar as exerting economic, political and military force upon other nations, but they present internal complications because of internal diversity. There's no reason that Silicon Valley should be representative of US diversity. US diversity is and should be merely one of several contributors to diversity of Silicon Valley. The US, like China, is one nation composed of many states many of which could function as their own nation as many countries in the EU do.
But I think people make these demands arbitrarily [or rather not, but whenever it benefits them]. So as an Irishwoman or an Indian man, I might not fret about the diversity of a product/service from Ireland or India, but then if a product or service from the US or Japan is used extensively in Ireland or India, I might insist on it having representation of my country/ethnicity.
You also don't hear people saying, HonHai (Foxconn) should hire a more diverse workforce, or Xiomi [or even Lexus, for example] even though many of the products out put by these companies are used in diverse places.
TBH, I find it positively weird to concern myself in any way about the identity of the people that make products I use. I am a human being after all and that is most important for the overwhelming majority of product decisions. Gender and body size may also be important depending on the product. For example, the only trait I wish more product designers understood and catered to is my height (I'm 6'5" (196cm)), but it's insane for me to demand a firm to employ someone my height or even design products for me when I'm well past the 99th percentile (I guess that makes me part of that 1%, right?). Accommodating people of my height may not be cost effective for most firms, especially if it raises the price enough to make them less competitive. If I can't use their product, then I won't and hopefully I'll find a product that caters specifically to me or solve my own problem.
Take a look at this video about a Chinese villager with Russian ancestry: https://www.youtube.com/watch?v=2rS30IjG05c
He is completely culturally Chinese, although in a rural kind of way, in his speech and mannerisms. If you can read Chinese, the comments are very inclusive.
"Non-Asian" people have settled in China for hundreds of years, especially Arab traders who arrived through the silk road. Multiculturalism is not a foreign concept in China.
They have settled for hundreds of years. And never been fully accepted.