You can use the following procedure to create characters in the zh locale.
To start the utility, type the following command:
system% sdtudctool |
The following window appears.
Click the Character button.
The following dialog box appears:
Specify the code position of the new character.
Create the outline or bitmap for the character using the drawing tools.
Click save from the file menu to save the character.
The new character(s) are saved in $HOME/.Xlocale/{locale}/fonts/UDC..