diff --git a/config-example.json b/config-example.json
index b39106d..b7c4ffc 100644
--- a/config-example.json
+++ b/config-example.json
@@ -142,26 +142,12 @@
       "editor": "vbscript"
     }
   },
-  "notices": [
-    {
-      "type": "// article",
-      "id": 1,
-      "comment": "Specify the id if you want to show a article"
-    },
-    {
-      "type": "// link",
-      "url": "",
-      "date": "",
-      "comment": "Specify the url and date if you want to show any link"
-    }
-  ],
   "links": [
     {
       "title": "LibreOJ",
       "url": "https://loj.ac/"
     }
   ],
-  "announcement": "Here is the announcement",
   "session_secret": "233",
   "judge_token": "233"
 }
diff --git a/models/article.js b/models/article.js
index 898ce41..03b65f5 100644
--- a/models/article.js
+++ b/models/article.js
@@ -38,6 +38,8 @@ let model = db.define('article', {
 
   comments_num: { type: Sequelize.INTEGER },
   allow_comment: { type: Sequelize.BOOLEAN },
+
+  is_notice: { type: Sequelize.BOOLEAN }
 }, {
   timestamps: false,
   tableName: 'article',
@@ -65,7 +67,9 @@ class Article extends Model {
       sort_time: 0,
 
       comments_num: 0,
-      allow_comment: true
+      allow_comment: true,
+
+      is_notice: false
     }, val)));
   }
 
diff --git a/modules/discussion.js b/modules/discussion.js
index 6756b9a..4296dd3 100644
--- a/modules/discussion.js
+++ b/modules/discussion.js
@@ -124,6 +124,7 @@ app.post('/article/:id/edit', async (req, res) => {
     article.title = req.body.title;
     article.content = req.body.content;
     article.update_time = time;
+    article.is_notice = res.locals.user && res.locals.user.is_admin && req.body.is_notice === 'on';
 
     await article.save();
 
diff --git a/modules/index.js b/modules/index.js
index 770b295..388aed0 100644
--- a/modules/index.js
+++ b/modules/index.js
@@ -29,18 +29,11 @@ app.get('/', async (req, res) => {
     let ranklist = await User.query([1, 10], { is_show: true }, [['ac_num', 'desc']]);
     await ranklist.forEachAsync(async x => x.renderInformation());
 
-    let notices = await syzoj.config.notices.mapAsync(async notice => {
-      if (notice.type === 'link') return notice;
-      else if (notice.type === 'article') {
-        let article = await Article.fromID(notice.id);
-        if (!article) throw new ErrorMessage(`无此帖子：${notice.id}`);
-        return {
-          title: article.title,
-          url: syzoj.utils.makeUrl(['article', article.id]),
-          date: syzoj.utils.formatDate(article.public_time, 'L')
-        };
-      }
-    });
+    let notices = (await Article.query(null, { is_notice: true }, [['public_time', 'desc']])).map(article => ({
+      title: article.title,
+      url: syzoj.utils.makeUrl(['article', article.id]),
+      date: syzoj.utils.formatDate(article.public_time, 'L')
+    }));
 
     let fortune = null;
     if (res.locals.user) {
diff --git a/static/style.css b/static/style.css
index 944b0c5..adfb0bd 100644
--- a/static/style.css
+++ b/static/style.css
@@ -349,6 +349,10 @@ table.center.aligned ul, table.center.aligned ol {
 	text-align: left;
 }
 
+body > .ui.page.dimmer {
+  position: fixed !important;
+}
+
 /* status color */
 
 /*
diff --git a/utility.js b/utility.js
index 6e24d16..c72a8ec 100644
--- a/utility.js
+++ b/utility.js
@@ -315,11 +315,10 @@ module.exports = {
     try {
       let request = require('request-promise');
       let res = await request({
-        uri: 'http://api.hitokoto.us/rand',
+        uri: 'https://sslapi.hitokoto.cn',
         timeout: 1500,
         qs: {
-          encode: 'json',
-          cat: 'a'
+          c: 'a'
         },
         json: true
       });
diff --git a/views/article.ejs b/views/article.ejs
index af68cda..3083dc7 100644
--- a/views/article.ejs
+++ b/views/article.ejs
@@ -1,17 +1,36 @@
 <% this.title = article.title + ' - 帖子'; %>
 <% include header %>
 <style type="text/css" xmlns:style="http://www.w3.org/1999/xhtml">
-    .small{
-    font-size: 0.7em;
-    }
+.small{
+  font-size: 0.7em;
+}
 </style>
 <div class="padding">
   <h1><%= article.title %></h1>
  	<p style="font_size: 0.7em"><img style="vertical-align: middle;" src="<%= syzoj.utils.gravatar(article.user.email, 64) %>" width="32" height="32">
  		<a href="<%= syzoj.utils.makeUrl(['user', article.user_id]) %>"><%= article.user.username %></a><% if (article.user.nameplate) { %><%- article.user.nameplate %><% } %> 于 <%= syzoj.utils.formatDate(article.public_time) %> 发表，<%= syzoj.utils.formatDate(article.update_time) %> 最后更新
         <% if (article.allowedEdit) { %>
-        <a class="ui mini red button" href="<%= syzoj.utils.makeUrl(['article', article.id, 'delete']) %>">删除文章</a>
+        <a class="ui mini red button" onclick="$('#modal-delete').modal('show')">删除文章</a>
         <a class="ui mini button" href="<%= syzoj.utils.makeUrl(['article', article.id, 'edit']) %>">编辑文章</a>
+        <div class="ui basic modal" id="modal-delete">
+          <div class="ui icon header">
+            <i class="trash icon"></i>
+            <p style="margin-top: 15px; ">删除文章</p>
+          </div>
+          <div class="content" style="text-align: center; ">
+            <p>确认删除这篇文章吗？</p>
+          </div>
+          <div class="actions">
+            <div class="ui red basic cancel inverted button">
+              <i class="remove icon"></i>
+              否
+            </div>
+            <a class="ui green ok inverted button" href="<%= syzoj.utils.makeUrl(['article', article.id, 'delete']) %>">
+              <i class="checkmark icon"></i>
+              是
+            </a>
+          </div>
+        </div>
         <% } %>
  	</p>
   <div class="ui existing segment">
@@ -32,7 +51,26 @@
           </div>
           <div class="text font-content"><%- comment.content %></div>
           <% if (comment.allowedEdit) { %>
-            <div class="actions"><a href="<%= syzoj.utils.makeUrl(['article', article.id, 'comment', comment.id, 'delete']) %>">删除</a></div>
+            <div class="actions"><a onclick="$('#modal-delete-<%= comment.id %>').modal('show')">删除</a></div>
+            <div class="ui basic modal" id="modal-delete-<%= comment.id %>">
+              <div class="ui icon header">
+                <i class="trash icon"></i>
+                <p style="margin-top: 15px; ">删除评论</p>
+              </div>
+              <div class="content" style="text-align: center; ">
+                <p>确认删除这条评论吗？</p>
+              </div>
+              <div class="actions">
+                <div class="ui red basic cancel inverted button">
+                  <i class="remove icon"></i>
+                  否
+                </div>
+                <a class="ui green ok inverted button" href="<%= syzoj.utils.makeUrl(['article', article.id, 'comment', comment.id, 'delete']) %>">
+                  <i class="checkmark icon"></i>
+                  是
+                </a>
+              </div>
+            </div>
           <% } %>
         </div>
       </div>
diff --git a/views/article_edit.ejs b/views/article_edit.ejs
index 88b7e82..d696d24 100644
--- a/views/article_edit.ejs
+++ b/views/article_edit.ejs
@@ -17,6 +17,13 @@
         <input type="text" id="title" name="title" value="<%= article.title %>">
         <label for="content">内容</label>
         <textarea rows="15" id="content" name="content" class="font-content"><%= article.content %></textarea>
+        <% if (user && user.is_admin) { %>
+          <div class="ui <% if (article.is_notice) { %>checked <% } %>checkbox" style="margin-top: 15px; ">
+            <input <% if (article.is_notice) { %>checked=""<% } %> name="is_notice" type="checkbox">
+            <label><strong>公告</strong></label>
+            <p style="margin-top: 5px; ">选择后将显示在首页公告栏。</p>
+          </div>
+        <% } %>
       </div>
     </div>
     <div class="ui bottom attached tab segment" data-tab="preview">
diff --git a/views/index.ejs b/views/index.ejs
index 8a31305..fbcff94 100644
--- a/views/index.ejs
+++ b/views/index.ejs
@@ -80,7 +80,7 @@
         <h4 class="ui top attached block header">一言（ヒトコト）</h4>
         <div class="ui bottom attached center aligned segment">
           <div style="font-size: 1em; line-height: 1.5em; "><%= hitokoto.hitokoto %></div>
-          <% if (hitokoto.source) { %><div style="text-align: right; margin-top: 15px; font-size: 0.9em; color: #666; ">——<%= hitokoto.source %></div><% } %>
+          <% if (hitokoto.from) { %><div style="text-align: right; margin-top: 15px; font-size: 0.9em; color: #666; ">——<%= hitokoto.from %></div><% } %>
         </div>
         <% } %>
         <%
@@ -182,14 +182,6 @@
         </table>
         <% } %>
       </div>
-      <h4 class="ui top attached block header font-content">信息栏</h4>
-      <div class="ui bottom attached <% if (!syzoj.config.announcement) { %>center aligned <% } %>segment">
-        <% if (!syzoj.config.announcement) { %>
-        无任何信息
-        <% } else { %>
-        <p><%- syzoj.config.announcement %></p>
-        <% } %>
-      </div>
       <% if (typeof links !== 'undefined' && links) { %>
       <h4 class="ui top attached block header font-content">友情链接</h4>
       <div class="ui bottom attached segment">
diff --git a/views/problem_data.ejs b/views/problem_data.ejs
index c5f4c98..5ac4d87 100644
--- a/views/problem_data.ejs
+++ b/views/problem_data.ejs
@@ -35,11 +35,6 @@ function getIcon(filename) {
 }
 %>
 <% include header %>
-<style>
-.ui.page.dimmer {
-  position: fixed;
-}
-</style>
 <div class="padding">
   <div class="ui grid">
     <div class="seven wide column">