Linux: configure preferred Chinese fonts

fonts.conf

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<!--
  ~/.config/fontconfig/fonts.conf
  The easiest way to set preferred Chinese fonts in Linux is through <prefer>.
  There is no need to worry about lang (locale) matching etc.
  For each family (serif, sans-serif, monospace) simply use <prefer>,
  and include your corresponding default English font family first
  (so that English does not get rendered in your preferred Chinese font)
  and then put the preferred Chinese font second.
  When the system encounters a Chinese character
  (for which the default English font has no glyph),
  it will immediately fall back onto the preferred Chinese font as desired.
-->
<fontconfig>
  <!-- Serif (Note: Noto Sans CJK TC is actually sans) -->
  <alias>
    <family>serif</family>
    <prefer>
      <family>DejaVu Serif</family>
      <family>Noto Sans CJK TC</family>
    </prefer>
  </alias>
  <!-- Sans-serif -->
  <alias>
    <family>sans-serif</family>
    <prefer>
      <family>DejaVu Sans</family>
      <family>Noto Sans CJK TC</family>
    </prefer>
  </alias>
  <!-- Monospace -->
  <alias>
    <family>monospace</family>
    <prefer>
      <family>DejaVu Sans Mono</family>
      <family>Noto Sans CJK TC</family>
    </prefer>
  </alias>
</fontconfig>