diff --git a/package.json b/package.json
index ecff20a..0119f71 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,6 @@
   "dependencies": {
     "copy-to-clipboard": "^3.0.8",
     "load-script": "^1.0.0",
-    "md5": "^2.2.1",
     "pressure": "^2.1.2",
     "react": "^16.4.2",
     "react-dom": "^16.4.2",
diff --git a/src/App.js b/src/App.js
index dcb9fcd..50778b5 100644
--- a/src/App.js
+++ b/src/App.js
@@ -3,20 +3,10 @@ import {Flow} from './Flows';
 import {Title} from './Title';
 import {Sidebar} from './Sidebar';
 import {PressureHelper} from './PressureHelper';
-import {TokenCtx,ISOP_APPKEY} from './UserAction';
+import {TokenCtx} from './UserAction';
 import {load_config,bgimg_style} from './Config';
 
 function DeprecatedAlert(props) {
-    if(document.domain==='hole.xmcp.ml')
-        return (
-            <div className="flow-item">
-                <div className="box box-tip">
-                    <p><b>请使用新域名访问P大树洞！</b></p>
-                    <p><a href="http://pkuhelper.pku.edu.cn/hole/">pkuhelper.pku.edu.cn/hole</a></p>
-                    <p>当前域名将停止支持</p>
-                </div>
-            </div>
-        );
     return null;
 }
 
diff --git a/src/UserAction.js b/src/UserAction.js
index cc3d6d6..f1ced4b 100644
--- a/src/UserAction.js
+++ b/src/UserAction.js
@@ -1,10 +1,8 @@
 import React, {Component, PureComponent} from 'react';
-import {ISOP_APPKEY,ISOP_APPCODE,ISOP_SVCID} from './infrastructure/const';
 import copy from 'copy-to-clipboard';
 import {API_BASE,SafeTextarea} from './Common';
 import {MessageViewer} from './Message';
 import {API_VERSION_PARAM,PKUHELPER_ROOT,API,get_json} from './flows_api';
-import md5 from 'md5';
 
 import './UserAction.css';
 
@@ -15,8 +13,6 @@ const MAX_IMG_DIAM=8000;
 const MAX_IMG_PX=6000000;
 const MAX_IMG_FILESIZE=450000*BASE64_RATE;
 
-export {ISOP_APPKEY,ISOP_APPCODE,ISOP_SVCID};
-
 export const TokenCtx=React.createContext({
     value: null,
     set_value: ()=>{},
@@ -95,15 +91,8 @@ export class LoginForm extends Component {
         this.setState({
             loading_status: 'loading',
         },()=>{
-            let param=
-                'user='+this.username_ref.current.value+
-                '&svcId='+ISOP_SVCID+
-                '&appKey='+ISOP_APPKEY+
-                '&timestamp='+(+new Date());
-
             fetch(
-                PKUHELPER_ROOT+'isop_proxy/'+api_name+'?'+param+
-                '&msg='+md5(param+ISOP_APPCODE),
+                PKUHELPER_ROOT+'api_xmcp/isop/'+api_name+'?user='+encodeURIComponent(this.username_ref.current.value),
             )
                 .then(get_json)
                 .then((json)=>{
diff --git a/src/infrastructure b/src/infrastructure
index 1bbc568..d1b302d 160000
--- a/src/infrastructure
+++ b/src/infrastructure
@@ -1 +1 @@
-Subproject commit 1bbc568e5f39d211fd5c6551ffb9d14bed48955b
+Subproject commit d1b302d3d1366b7075b0a27238abb0fbdf88f2fc