deb http://mirrors.163.com/debian/ bullseye main non-free contrib

deb http://mirrors.163.com/debian/ bullseye-updates main non-free contrib

deb http://mirrors.163.com/debian/ bullseye-backports main non-free contrib

deb-src http://mirrors.163.com/debian/ bullseye main non-free contrib

deb-src http://mirrors.163.com/debian/ bullseye-updates main non-free contrib

deb-src http://mirrors.163.com/debian/ bullseye-backports main non-free contrib

#deb http://mirrors.163.com/debian-security/ bullseye/updates main non-free contrib

#deb-src http://mirrors.163.com/debian-security/ bullseye/updates main non-free contrib