Who are Chinese Americans?

Richard Wilson4 said:Chinese people make up about 92% of the population, so China is actually more ethnically homogeneous than the US, where we're at roughly 89% non-Hispanic

But honestly, those Han Chinese people can't even understand one another easily. Besides, there's no reason for China to switch to the Latin alphabet since everyone there understands their own script perfectly fine—switching to Latin characters would just make communication harder for them...