+cn-bj1 = http://mirrors.tuna.tsinghua.edu.cn/neurodebian
+cn-bj2 = http://debian.ustc.edu.cn/neurodebian
+# cn-ln = http://mirrors.neusoft.edu.cn/neurodebian
+cn-lz = http://mirror.lzu.edu.cn/neurodebian
+cn-zj = http://mirrors.zju.edu.cn/neurodebian