Use ttf2lff tool to convert NotoSansTC-Thin.ttf to notosantc-thin.lff
Unzip notosanstc-thin.zip
Copy notosantc-thin.lff to C:\Program Files (x86)\LibreCAD\resources\fonts
Set the Word Attributes Pen Width 0.13mm or up to you
Usage: ttf2lff <options> <ttf file> <lff file>
ttf file: An existing True Type Font file
lff file: The LFF font file to create
options are:
-n nodes Number of nodes for quadratic and cubic splines (int)
-a author Author of the font. Preferably full name and e-mail address
-l letter spacing Letter spacing (float)
-w word spacing Word spacing (float)
-f line spacing factor Default is 1.0 (float)
-d precision Number of decimal digits (int)
-L license license of the font.