diff --git a/modules/services/xmuvpn/default.nix b/modules/services/xmuvpn/default.nix
index c2b36521..f32c8485 100644
--- a/modules/services/xmuvpn/default.nix
+++ b/modules/services/xmuvpn/default.nix
@@ -16,45 +16,31 @@ inputs:
       ports = [ "127.0.0.1:5901:5901/tcp" "127.0.0.1:10069:1080/tcp" ];
       extraOptions = [ "--dns=223.5.5.5" "--device=/dev/net/tun" "--cap-add=NET_ADMIN" ];
       volumes = [ "xmuvpn:/root" ];
-      environment.PASSWORD = "xxxx";
+      environment = { PASSWORD = "xxxx"; PING_ADDR = "office.chn.moe"; };
     };
     nixos.services.docker = {};
-    systemd.services =
+    systemd.services.xmuvpn-forwarder =
     {
-      xmuvpn-forwarder =
-      {
-        description = "xmuvpn forwarder daemon";
-        after = [ "network.target" "v2ray-forwarder.service" ];
-        wantedBy = [ "multi-user.target" ];
-        serviceConfig =
-          let ipset = "${inputs.pkgs.ipset}/bin/ipset";
-          in
-          {
-            Type = "oneshot";
-            RemainAfterExit = true;
-            ExecStart = inputs.pkgs.writeShellScript "xmuvpn-forwarder.start"
-              (builtins.concatStringsSep "\n" (builtins.map
-                (host: "${ipset} add xmu_net ${host}")
-                [
-                  # when add new ip, remember to also add it to router
-                  "218.193.58.125" "210.34.0.35" "121.192.191.10" "10.24.84.31" "59.77.0.143" "59.77.36.248"
-                  "172.27.124.24" "59.77.36.156" "59.77.36.223" "210.34.0.84" "218.193.50.157"
-                  "210.34.16.60" "10.26.14.70" "10.26.14.56" "210.34.16.20" "59.77.36.250"
-                ]));
-            ExecStop = inputs.pkgs.writeShellScript "xmuvpn-forwarder.stop" "${ipset} flush xmu_net";
-          };
-      };
-      xmuvpn-ping =
-      {
-        description = "ping xmuvpn";
-        after = [ "xmuvpn-forwarder.service" ];
-        wantedBy = [ "multi-user.target" ];
-        serviceConfig =
+      description = "xmuvpn forwarder daemon";
+      after = [ "network.target" "v2ray-forwarder.service" ];
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig =
+        let ipset = "${inputs.pkgs.ipset}/bin/ipset";
+        in
         {
-          ExecStart = "${inputs.pkgs.tcping-go}/bin/tcping office.chn.moe 22 -c 0 -I 10s -H";
-          Restart = "always";
+          Type = "oneshot";
+          RemainAfterExit = true;
+          ExecStart = inputs.pkgs.writeShellScript "xmuvpn-forwarder.start"
+            (builtins.concatStringsSep "\n" (builtins.map
+              (host: "${ipset} add xmu_net ${host}")
+              [
+                # when add new ip, remember to also add it to router
+                "218.193.58.125" "210.34.0.35" "121.192.191.10" "10.24.84.31" "59.77.0.143" "59.77.36.248"
+                "172.27.124.24" "59.77.36.156" "59.77.36.223" "210.34.0.84" "218.193.50.157"
+                "210.34.16.60" "10.26.14.70" "10.26.14.56" "210.34.16.20" "59.77.36.250"
+              ]));
+          ExecStop = inputs.pkgs.writeShellScript "xmuvpn-forwarder.stop" "${ipset} flush xmu_net";
         };
-      };
     };
   };
 }