记号：一个镜像很多的站点

http://mirrors.ustc.edu.cn/

连lede的都有，不错

在openwrt中改为以下源，下载速度会快很多：

src/gz openwrt_core http://mirrors.ustc.edu.cn/lede/releases/18.06.2/targets/ar71xx/generic/packages
src/gz openwrt_base http://mirrors.ustc.edu.cn/lede/releases/18.06.2/packages/mips_24kc/base
src/gz openwrt_luci http://mirrors.ustc.edu.cn/lede/releases/18.06.2/packages/mips_24kc/luci
src/gz openwrt_packages http://mirrors.ustc.edu.cn/lede/releases/18.06.2/packages/mips_24kc/packages
src/gz openwrt_routing http://mirrors.ustc.edu.cn/lede/releases/18.06.2/packages/mips_24kc/routing
src/gz openwrt_telephony http://mirrors.ustc.edu.cn/lede/releases/18.06.2/packages/mips_24kc/telephony