I have read the past questions on this but there were various answers and opinions regarding the use of articles in front of "-ese" nationalities / race. Can someone offer concrete explanations about these examples?
I am Chinese.
I am a Chinese. (I have heard this and assumed it as "I am a Chinese person")
I am Vietnamese.
I am a Vietnamese.
I am not a native English speaker.
The articles often serve no purpose even when normatively required....
Hmm ... what about these?
I am an American.
I am American.
I am a Malaysian.
I am Malaysian.
2...But you do need "a","an", or "the" if there is a noun after 'American', 'Malaysian', 'Chinese' or whatever country you are talking about.
I am a Canadian citizen.
He is an Austrian artist.
She is the Italian reporter I spoke to.