Introducing Mirrors of Debian in Hong Kong.
Upstream: https://mirrors.xtom.com.hk
Debian
https://mirrors.nexet.hk/debian
Debian Security
https://mirrors.nexet.hk/debian-security/
Debian CD
https://mirrors.nexet.hk/debian-cd/
One command to replace with /etc/apt/source.list
sudo sed -i 's/deb.debian.org/mirrors.nexet.hk/g' /etc/apt/sources.list
Or just edit `/etc/apt/source.list
deb http://mirrors.nexet.hk/debian stable main contrib non-free
# deb-src http://mirrors.nexet.hk/debian stable main contrib non-free
deb http://mirrors.nexet.hk/debian stable-updates main contrib non-free
# deb-src http://mirrors.nexet.hk/debian stable-updates main contrib non-free
# deb http://mirrors.nexet.hk/debian stable-proposed-updates main contrib non-free
# deb-src mirrors.nexet.hk/debian stable-proposed-updates main contrib non-free
deb http://mirrors.ustc.edu.cn/debian-security/ stable-security main non-free contrib
# deb-src http://mirrors.ustc.edu.cn/debian-security/ stable-security main non-free contrib