Edit file File name : 66-google-noto-sans-lisu.conf Content :<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE fontconfig SYSTEM "fonts.dtd"> <fontconfig> <match> <test name="lang" compare="contains"> <string>lo</string> </test> <test name="family"> <string>sans-serif</string> </test> <edit name="family" mode="prepend"> <string>Noto Sans Lao</string> </edit> </match> <alias> <family>Noto Sans Lao</family> <default> <family>sans-serif</family> </default> </alias> </fontconfig> Save