On Wed, 5 Aug 2020 14:49:33 +0100
Janek Stolarek <jwstolarek@...> wrote:

> In the TCC Fonts module by default the fonts are labelled simply as "serif" and "sans-serif", 
> instead of concrete font names. How can I learn which exact fonts are being used? Bonus question: 
> and how can I add support for Chinese signs to these fonts? Japanese seems to work fine, but some 
> Chinese signs show up as crossed boxes.

I get the full font names in TCC, so there may be something odd with your setup
(or it's a recent regression).

As for the other, you probably don't have a Chinese font (as opposed to a Japanese font,
which won't contain all the characters used in Chinese) installed.  The one I used is
described by my distro as "WenQuanYi Hei-Ti Style (sans-serif) Chinese outline font",
has a package name of wqy-zenhei, and has a (Chinese-language) homepage with
downloads at http://wenq.org/wqy2/index.cgi?ZenHei .

E. Liddell