This mirror only includes packages for 32/64-bit x86 architecture processors. For devices with ARM (arm64, armhf), PowerPC (ppc64el), RISC-V (riscv64), and S390x architectures (corresponding to the official source ports.ubuntu.com), please use the ubuntu-ports mirror.
The configuration file for Ubuntu's apt sources is /etc/apt/sources.list. Make a backup of the system's default file, replace it with the following content, and you can use the selected software source mirror.
Due to delays in mirror site synchronization, it may result in the production environment system not promptly checking or installing the latest security updates. It is not recommended to replace the security source.