deb https://mirrors.ustc.edu.cn/debian/ trixie main contrib non-free non-free-firmware
deb-src https://mirrors.ustc.edu.cn/debian/ trixie main contrib non-free non-free-firmware

deb https://mirrors.ustc.edu.cn/debian/ trixie-updates main contrib non-free non-free-firmware
deb-src https://mirrors.ustc.edu.cn/debian/ trixie-updates main contrib non-free non-free-firmware

deb https://mirrors.ustc.edu.cn/debian/ trixie-backports main contrib non-free non-free-firmware
deb-src https://mirrors.ustc.edu.cn/debian/ trixie-backports main contrib non-free non-free-firmware

deb https://mirrors.ustc.edu.cn/debian-security/ trixie-security main contrib non-free non-free-firmware
deb-src https://mirrors.ustc.edu.cn/debian-security/ trixie-security main contrib non-free non-free-firmware