sudo sed -e 's|^metalink=|#metalink=|g' \
-e 's|^#baseurl=http://download.example/pub/fedora/linux|baseurl=https://mirrors.ustc.edu.cn/fedora|g' \
-i.bak \
/etc/yum.repos.d/fedora.repo \
/etc/yum.repos.d/fedora-updates.repo
sudo dnf makecache
cat > /etc/locale.conf<<EOF
LANG=en_US.UTF-8
LANGUAGE=en_US:en
LC_ALL=en_US.UTF-8
LC_MESSAGES=C
EOF
reboot