Debian : https://ycc-mirrors.pages.dev/debian/
                   Debian Securtiy: https://ycc-mirrors.pages.dev/debian-security/ 
                   Termux: https://ycc-mirrors.pages.dev/termux/ 
                   Openwrt: https://ycc-mirrors.pages.dev/openwrt/ 
                   Cygwin: https://ycc-mirrors.pages.dev/cygwin/