Not to like yoink that concept but that second to last one makes a much more interesting and rich character background than "Chinese POC"

Like if you're doing a San Fran/Hong Kong/Seoul based RP and you have a character whose family is Christian (or Atheist) but their mom still prays to traditional Chinese Gods because once when her child (your character) was small and very ill she prayed at a temple and her baby got better.

That's just a lot more interesting.  Much more relatable.

If you're going to write about a Hispanic/White/Black/Latinx/POC/AAPI/Whatever character fleshing it out a little at the start with something like that, some sort of slightly complicated life perspective can help flesh it out beyond merely this person is an X Y whose parents are W

We've thus far been talking about the minority aspect of this as if all RPs were taking place in modern America, but this would also apply to other nations, times and fantasy or science fiction races and groups.