I am a chinese还是I am chinese正确

I am a chinese还是I am chinese正确 I am Chinese.I am a Chinese.哪个句子正确 是i am a chinese 还是 i am chinese I am a Chinese还是I am Chinese I am a Chinese. i am proud i am a chinese I am a Chinese和I am Chinese哪个对? - What is your nationality?- I am a Chinese 还是 I am Chinese 我是中国人是怎么写,是I am Chinese还是I am a Chinese? I am from China.的同义句是I am a Chinese.还是I am Chinese.还是都行 i am not chinese i am nativer chinese