进入系统 -> 软件包，点击“配置”
将下面的内容粘贴到“自定义软件源”中，保存并应用。

src/gz core http://mirrors.ustc.edu.cn/lede/releases/18.06.9/targets/x86/64/packages
src/gz base http://mirrors.ustc.edu.cn/lede/releases/18.06.9/packages/x86_64/base
src/gz luci http://mirrors.ustc.edu.cn/lede/releases/18.06.9/packages/x86_64/luci
src/gz packages http://mirrors.ustc.edu.cn/lede/releases/18.06.9/packages/x86_64/packages
src/gz routing http://mirrors.ustc.edu.cn/lede/releases/18.06.9/packages/x86_64/routing
src/gz telephony http://mirrors.ustc.edu.cn/lede/releases/18.06.9/packages/x86_64/telephony
src/gz luci_other https://op.supes.top/packages/x86_64

回到“动作”，点击 “刷新列表”，过滤器中搜索“qb”，下面的选“可用软件包”，安装 “luci-app-qbittorrent”