if you are Chinese tPFer from China, Hong Kong or Taiwan....

huh? Do you mean Han Chinese?

It means ethnic Chinese.. people outside of CHina rarely use this word. Non ethnic chinese in China are generally referred to as the minorities in Western media.. for example the uyghurs, manchurians, naxi etc..

When people say chinese, they typically mean Han Chinese.

and what's so different abt them .. as you were saying. Please elaborate