TrueType font that supports Chinese includings simsun, simlei, nsimsun (simplified chinese) as well as pmingliu (traditional chinese) that can be found in windows.

Following is a brief guidline to test these truetype fonts in linux (hope it meet your needs :) ),
1. make the windows font files accessable to your linux.
e.g. mount the windows partion to ur sys so that /mnt/path_to_fonts/ contains the *.ttf files.
2. convert *.ttf to lower case.
3. use ttmkdir to build the font.scale file.
4. use mkdontdir to build the font.dir file.
5. modify the two files to correct an error so that GB2312 is visible to X.
6. modify the XF86Config and XftConfig to select the right fonts.

Restart X and now you have the TrueType fonts in your X. The next thing is to configure your window manager to use them. The procedures are different for different WM and even different versions of the same WM.

If you still insist pretty Chinese fonts in linux, I'm afraid you have to google for the details. :D

e.g. google the following,
truetype fonts + XFree86
XFree86 Font De-uglification HOWTO
gb2312 + gnome + gb2312 + gnome + linuxeden