#replace content /etc/fonts/language-selector.conf with below lines


<fontconfig>
<alias>
<family>serif</family>
<prefer>
<family>Bitstream Vera Serif</family>
<family>DejaVu Serif</family>
<family>SimSun</family>
<family>AR PL ShanHeiSun Uni</family>
<family>WenQuanYi Bitmap Song</family>
<family>AR PL ZenKai Uni</family>
</prefer>
</alias>
<alias>
<family>sans-serif</family>
<prefer>
<family>Bitstream Vera Sans</family>
<family>DejaVu Sans</family>
<family>SimSun</family>
<family>AR PL ShanHeiSun Uni</family>
<family>WenQuanYi Bitmap Song</family>
<family>AR PL ZenKai Uni</family>
</prefer>
</alias>
<alias>
<family>monospace</family>
<prefer>
<family>Bitstream Vera Sans Mono</family>
<family>DejaVu Sans Mono</family>
<family>AR PL ShanHeiSun Uni</family>
<family>WenQuanYi Bitmap Song</family>
<family>AR PL ZenKai Uni</family>
</prefer>
</alias>
<match target="font">
<test name="family" compare="contains">
<string>Song</string>
<string>Sun</string>
<string>Kai</string>
<string>Ming</string>
</test>
<test compare="more_eq" target="pattern" name="weight">
<int>180</int>
</test>
<edit mode="assign" name="embolden">
<bool>true</bool>
</edit>
</match>
<!-- 以下部分主要是设置8-18px之间的中文字体的反抗锯齿功能，如果你喜欢抗锯齿，请不要使用 -->
<match target="font">
<test name="family" compare="contains">
<string>Song</string>
<string>Sun</string>
<string>Kai</string>
<string>Ming</string>
<string>SimSun</string>
<string>宋体</string>
</test>
<edit name="globaladvance">
<bool>false</bool>
</edit>
<edit name="spacing">
<int>0</int>
</edit>
<edit name="hinting">
<bool>true</bool>
</edit>
<edit name="autohint">
<bool>false</bool>
</edit>
<edit name="antialias" mode="assign">
<bool>true</bool>
</edit>
<test name="pixelsize" compare="less_eq" qual="any">
<int>18</int>
</test>
<edit name="antialias" mode="assign">
<bool>false</bool>
</edit>
<test name="pixelsize" compare="more_eq">
<int>8</int>
</test>
<edit name="antialias" mode="assign">
<bool>false</bool>
</edit>
</match>
</fontconfig>