why linux no chinese?

Linux support Chinese, both traditional and simple.

Try Ubuntu

大部份都有中文
亦可以在裝既時候選擇中文

如果要好中文下既
可以用Red Flag
http://www.redflag-linux.com/

I'd argue linux support for international language is better than Windows.

In Ubuntu, make sure you install the support for that language that you need under Settings->Administrator->Language (or something like that, I don't use ubuntu).

i use ubuntu too..
but can you read chinese pdf ?
I can read but the layout is terrible...