diff --git a/src/Config.js b/src/Config.js
index b2b0dc1..c3b67d3 100644
--- a/src/Config.js
+++ b/src/Config.js
@@ -3,8 +3,10 @@ import React, { PureComponent } from 'react';
 import './Config.css';
 
 const BUILTIN_IMGS = {
+  'https://www.tsinghua.edu.cn/images/footer.jpg':
+    '清华紫（默认）',
   'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/gbp.jpg':
-    '寻觅繁星（默认）',
+    '寻觅繁星',
   'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/eriri.jpg':
     '平成著名画师',
   'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/yurucamp.jpg':
@@ -21,13 +23,14 @@ const BUILTIN_IMGS = {
 
 const DEFAULT_CONFIG = {
   background_img:
-    'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/gbp.jpg',
+    'https://www.tsinghua.edu.cn/images/footer.jpg',
   background_color: '#113366',
   pressure: false,
   easter_egg: true,
   color_scheme: 'default',
-  fold: true,
+  no_c_post: false,
   block_words: [],
+  whitelist_cw: []
 };
 
 export function load_config() {
@@ -370,7 +373,7 @@ export class ConfigUI extends PureComponent {
           </p>
           <p>
             <b>
-              修改设置后{' '}
+              部分设置修改后需要{' '}
               <a
                 onClick={() => {
                   window.location.reload();
@@ -407,6 +410,16 @@ export class ConfigUI extends PureComponent {
             parse={(string) => string.split('\n')}
           />
           <hr />
+          <ConfigTextArea
+            id="whitelist_cw"
+            callback={this.save_changes_bound}
+            name="展开指定的折叠警告"
+            description={'完全匹配的树洞不会被折叠，每行一个豁免词，也可使用一个星号("*")表示豁免所有'}
+            display={(array) => array.join('\n')}
+            sift={(array) => array.filter((v) => v)}
+            parse={(string) => string.split('\n')}
+          />
+          <hr />
           <ConfigSwitch
             callback={this.save_changes_bound}
             id="pressure"
@@ -423,15 +436,15 @@ export class ConfigUI extends PureComponent {
           <hr />
           <ConfigSwitch
             callback={this.save_changes_bound}
-            id="fold"
-            name="折叠树洞"
-            description="在时间线中折叠可能引起不适的树洞"
+            id="no_c_post"
+            name="忽略折叠的树洞"
+            description="不获取所有带折叠警告的树洞，折叠警告豁免将不起作用"
           />
           <hr />
           <p>
             新功能建议或问题反馈请在&nbsp;
             <a
-              href="https://github.com/thuhole/thuhole-go-backend/issues"
+              href="https://github.com/newthuhole/hole-backend/issues"
               target="_blank"
             >
               GitHub <span className="icon icon-github" />
diff --git a/src/Flows.js b/src/Flows.js
index 6d20b26..ffc8f76 100644
--- a/src/Flows.js
+++ b/src/Flows.js
@@ -666,7 +666,7 @@ class FlowItemRow extends PureComponent {
     super(props);
     this.needFold = props.info.cw &&
       (props.search_param === '热榜' || !props.search_param) &&
-      window.config.fold &&
+      (window.config.whitelist_cw.indexOf('*')==-1 && window.config.whitelist_cw.indexOf(props.info.cw)==-1) &&
       props.mode !== 'attention' && props.mode !== 'attention_finished';
     this.state = {
       replies: [],
@@ -674,8 +674,8 @@ class FlowItemRow extends PureComponent {
       reply_error: null,
       info: Object.assign({}, props.info, { variant: {} }),
       hidden: window.config.block_words.some((word) =>
-        props.info.text.includes(word),
-      ) || this.needFold,
+          props.info.text.includes(word),
+        ) || this.needFold,
       attention:
         props.attention_override === null ? false : props.attention_override,
       cached: true, // default no display anything
@@ -897,7 +897,7 @@ class FlowItemRow extends PureComponent {
                 )}
                 <Time stamp={this.props.info.timestamp} short={true} />
                 <span className="box-header-badge">
-                  {this.needFold ? '已隐藏' : '已屏蔽'}
+                  {this.needFold ? '已折叠' : '已屏蔽'}
                 </span>
                 <div style={{ clear: 'both' }} />
               </div>
@@ -1073,7 +1073,7 @@ export class Flow extends PureComponent {
       this.setState((prev, props) => ({
         loaded_pages: prev.loaded_pages - 1,
         loading_status: 'failed',
-        error_msg: prev.loaded_pages>1 ? '找不到更多了' : '' + err,
+        error_msg: prev.loaded_pages > 1 ? '找不到更多了' : '' + err,
       }));
     };
 
@@ -1095,10 +1095,10 @@ export class Flow extends PureComponent {
             json.data.forEach((x) => {
               if (x.comments) {
                 let comment_json = {
-                  'code': 0,
-                  'attention': x.attention,
-                  'data': x.comments
-                }
+                  code: 0,
+                  attention: x.attention,
+                  data: x.comments,
+                };
                 //console.log('My cache', comment_json, x.pid, x.reply)
                 cache().put(x.pid, parseInt(x.reply, 10), comment_json);
               }
diff --git a/src/UserAction.js b/src/UserAction.js
index cf79c05..2a60da9 100644
--- a/src/UserAction.js
+++ b/src/UserAction.js
@@ -25,8 +25,8 @@ const MAX_IMG_DIAM = 8000;
 const MAX_IMG_PX = 5000000;
 const MAX_IMG_FILESIZE = 450000 * BASE64_RATE;
 
-const REPOSITORY = 'https://a.com/b';
-const EMAIL = 'a@b.com';
+const REPOSITORY = 'https://github.com/newthuhole';
+const EMAIL = 'hole_thu@riseup.net';
 
 export const TokenCtx = React.createContext({
   value: null,
@@ -39,6 +39,11 @@ export function InfoSidebar(props) {
       <PromotionBar />
       <LoginForm show_sidebar={props.show_sidebar} />
       <div className="box list-menu">
+        <a href="/about.html" target="_blank">
+          <span className="icon icon-textfile" />
+          <label>关于</label>
+        </a>
+        &nbsp;&nbsp;
         <a
           onClick={() => {
             props.show_sidebar('设置', <ConfigUI />);
@@ -52,14 +57,6 @@ export function InfoSidebar(props) {
           <span className="icon icon-textfile" />
           <label>树洞规范（试行）</label>
         </a>
-        &nbsp;&nbsp;
-        <a
-          href={REPOSITORY+"/issues"}
-          target="_blank"
-        >
-          <span className="icon icon-github" />
-          <label>意见反馈</label>
-        </a>
       </div>
       <div className="box help-desc-box">
         <p>
@@ -88,7 +85,8 @@ export function InfoSidebar(props) {
         </p>
       </div>
       <div className="box help-desc-box">
-        <p>联系我们：<a href={"mailto:"+EMAIL}>{EMAIL}</a></p>
+        <p>意见反馈请加tag #意见反馈 或到github后端的issus区。</p>
+        <p>联系我们：<a href={"mailto:"+EMAIL}>{EMAIL}</a> 。</p>
       </div>
       <div className="box help-desc-box">
         <p>
@@ -102,7 +100,7 @@ export function InfoSidebar(props) {
           <a href={REPOSITORY} target="_blank">
             GitHub
           </a>{' '}
-          开源
+          开源。
         </p>
         <p>
           新T树洞 网页版基于
@@ -121,7 +119,7 @@ export function InfoSidebar(props) {
           <a href="https://icomoon.io/#icons" target="_blank" rel="noopener">
             IcoMoon
           </a>
-          等开源项目
+          等开源项目。
         </p>
       </div>
     </div>
diff --git a/src/flows_api.js b/src/flows_api.js
index 4f27dac..7b855cd 100644
--- a/src/flows_api.js
+++ b/src/flows_api.js
@@ -118,7 +118,10 @@ export const API = {
 
   get_list: async (page, token) => {
     let response = await fetch(
-      API_BASE + '/getlist' + token_param(token) + '&p=' + page,
+      API_BASE + '/getlist' 
+        + token_param(token) 
+        + '&p=' + page 
+        + (window.config.no_c_post ? '&no_cw' : '')
     );
     return handle_response(response);
   },
diff --git a/src/infrastructure/widgets.css b/src/infrastructure/widgets.css
index 5fc7ddf..4808015 100644
--- a/src/infrastructure/widgets.css
+++ b/src/infrastructure/widgets.css
@@ -301,13 +301,15 @@ a.app-switcher-item, .app-switcher-item a {
 }
 
 a.button {
-    -webkit-appearance: button;
-    -moz-appearance: button;
-    appearance: button;
+  -webkit-appearance: button;
+  -moz-appearance: button;
+  appearance: button;
 
-    text-decoration: none;
-    color: initial;
+  text-decoration: none;
+  color: initial;
 
-	min-width: 6em;
-	font-size: 0.85em;
+  min-width: 6em;
+  font-size: 0.85em;
+
+  padding: 5px;
 }
diff --git a/src/infrastructure/widgets.js b/src/infrastructure/widgets.js
index 4d3400a..c73385b 100644
--- a/src/infrastructure/widgets.js
+++ b/src/infrastructure/widgets.js
@@ -76,27 +76,30 @@ class LoginPopupSelf extends Component {
                         <b>通过第三方验证登陆T大树洞</b>
                     </p>
 			        <p>
-                        <a className="button" href="/_login?p=cs" target="_blank"
-                                >
-                            闭社
+                        <a href="/_login?p=cs" target="_blank">
+                            <span className="icon icon-login" />
+                            &nbsp;闭社
                         </a>
 			        </p>
 			        <p>
                         <button type="button" disabled
                                 >
-                            T大树洞
+                            <span className="icon icon-login" />
+                            &nbsp;T大树洞
                         </button>
 			        </p>
 			        <p>
                         <button type="button" disabled
                                 >
-                            未名bbs
+                            <span className="icon icon-login" />
+                            &nbsp;未名bbs
                         </button>
 			        </p>
 			        <p>
                         <button type="button" disabled
                                 >
-                            清华统一身份认证
+                            <span className="icon icon-login" />
+                            &nbsp;清华统一身份认证
                         </button>
                     </p>
                     <hr />