I don't have access to a LaserJet M602n printer, so don't know much about its capabilities.
Substituting 12 for the XX point size in your skeleton PCL escape sequence:
<Esc>(18N Primary Font: Symbol Set (18N = Unicode)<Esc>(s1p Primary Font: Spacing: Proportional
12v Primary Font: Height (12 points)
0s Primary Font: Style (Upright, solid)
0b Primary Font: Stroke Weight: Medium
17007T Primary Font: Typeface (identifier = 17007)
shows that you are selecting a font:
- Which supports the 18N (= Unicode) symbol set; all printer resident unbound scalable encapsulated TrueType fonts should theoretically therefore be candidates.
- Which is proportionally-spaced and available in the selected point size.
- With typeface identifier 17007 - I've no idea whether or not this is a printer-resident font on the M602 model.
However, to select characters with character codes outside of the single-byte 0x20->0xff range using Unicode code-points (of necessity two-bytes or more, since they are larger than 0xff), you also have to select the appropriate Text Parsing Mode; for Unicode this would be:
<Esc>&t83P Text Parsing Method: UTF-8
The required code-points then have to be specified using the (two-byte or more) UTF-8 encoding of the Unicode code-point values (so, for example, U+100 would be encoded as 0xc480); I don't know, off-hand, which Unicode sub-ranges are used for Chinese language characters.
There are other values of the Text Parsing Mode sequence to select, but I'm not very familiar with any of them:
<Esc>&t0P Text Parsing Method: 1-byte<Esc>&t1P Text Parsing Method: 1-byte<Esc>&t2P Text Parsing Method: 2-byte<Esc>&t21P Text Parsing Method: 1|2-byte Asian 7bit<Esc>&t31P Text Parsing Method: 1|2-byte Shift-JIS<Esc>&t38P Text Parsing Method: 1|2-byte Asian 8bit
which can be used with some other Asian symbol sets (if the printer supports them), but I don't know the details off-hand.