It's not just Asians though, but you probably know that.
It's not uncommon for aunts/uncles to turn a blind eye to child abuse. They just don't care because they see it as some sort of rite of passage, or because they view it as something that could never compare to the horrors of the motherland.
My father beat me so I went to my uncle (non-blood) for help and you know what I got? Another ass beating. The culture just doesn't view it as abuse unless you end up in the hospital, because at least you aren't starving to death.