[NTG-context] Chinese in ConTeXt

I started to use ConTeXt several weeks ago, and I like it very much :-) I met some problems when I tried to use Chinese in ConTeXt. I have tried to setup Chinese fonts according to the manual "Chinese in ConTeXt" (mchinese.pdf) which seems a little out-of-date. In the manual, programs gbpfb/chpfb, and gbenc are used to perpare the Chinese fonts. But, I chpfb is not shipped with trubolinux anymore . I have googled and couldn't find these programs on the internet. Do someone have some experience of how to setup Chinese in ConTeXt? Thanks in advance! Best wishes. Xiaojf