/etc/ is in fonts-arphic-ukai 0.2.20080216.2-4ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/etc/fonts/
/etc/fonts/conf.avail/
/etc/fonts/conf.avail/25-arphic-ukai-render.conf
/etc/fonts/conf.avail/41-arphic-ukai.conf
/etc/fonts/conf.avail/90-ttf-arphic-ukai-embolden.conf
/etc/fonts/conf.avail/75-ttf-arphic-ukai-select.conf
/etc/fonts/conf.avail/25-ttf-arphic-ukai-render.conf
/etc/fonts/conf.avail/35-ttf-arphic-ukai-aliases.conf
/etc/fonts/conf.avail/65-fonts-arphic-ukai.conf
/etc/fonts/conf.avail/90-arphic-ukai-embolden.conf
/etc/fonts/conf.avail/41-ttf-arphic-ukai.conf
/etc/fonts/conf.avail/75-arphic-ukai-select.conf
/etc/fonts/conf.avail/35-arphic-ukai-aliases.conf
/etc/fonts/conf.d/
/etc/fonts/conf.d/25-arphic-ukai-render.conf
/etc/fonts/conf.d/41-arphic-ukai.conf
/etc/fonts/conf.d/65-fonts-arphic-ukai.conf
/etc/fonts/conf.d/90-arphic-ukai-embolden.conf
/etc/fonts/conf.d/75-arphic-ukai-select.conf
/etc/fonts/conf.d/35-arphic-ukai-aliases.conf