One is the TrueType font, with the suffix ttf, which is saved in the font folder of windows. This font is solid, luxurious and takes up space.

One is a font developed by cad itself, called font, and the suffix is shx, which is stored in the fonts folder under the cad installation directory. This font is hollow and easy to display.

If you use TrueType fonts, you can support Chinese characters. If you use SHX fonts, you need to use large fonts to support Chinese characters. When you can't find the required large font when opening a file, Chinese characters will display "?" .

Large font is a special type of font (SHX), which is specially used to support Asian letters.