/etc/fonts/conf.d/69-language-selector-zh-sg.conf is in language-selector-common 0.129.
This file is owned by root:root, with mode 0o777.
It is a symlink to /etc/fonts/conf.d/../conf.avail/69-language-selector-zh-sg.conf
/etc/fonts/conf.d/../conf.avail/69-language-selector-zh-sg.conf