An application must have the mp utility to print Simplified Chinese characters.
The mp utility supports all Asian locales including UTF-8 locales. As a printing filter, mp generates a properly formatted version of the file content in PostScript format. Depending on the locale's system font configuration for mp, the Postscript output file contains glyph images from a scalable or a bitmap system font. The mp utility is enhanced in this release to print files of a certain type for each locale. For more information, see the mp(1) man page.
You can use a command such as the following to print a file with Simplified Chinese characters. The file might also include ASCII/English characters.
system% mp filename | lp -d printer