diff --git a/themes/fluid/layout/index.ejs b/themes/fluid/layout/index.ejs
index f47e2df6..7521de1f 100644
--- a/themes/fluid/layout/index.ejs
+++ b/themes/fluid/layout/index.ejs
@@ -46,7 +46,7 @@ if (Array.isArray(page.banner_group) && page.banner_group.length) {
         </a>
       </h2>
 
-      <% var excerpt = post.description || post.excerpt || (theme.index.auto_excerpt.enable && post.content) %>
+      <% var excerpt = post.description || post.excerpt || (theme.index.auto_excerpt.enable && !post.encrypt && post.content) %>
       <a class="index-excerpt <%= index_img ? '' : 'index-excerpt__noimg' %>" href="<%= post_url %>" target="<%- theme.index.post_url_target %>">
         <div>
           <%- strip_html(excerpt).substring(0, 200).trim().replace(/\n/g, ' ') %>
diff --git a/themes/fluid/scripts/helpers/utils.js b/themes/fluid/scripts/helpers/utils.js
index aed604c1..7581d62e 100644
--- a/themes/fluid/scripts/helpers/utils.js
+++ b/themes/fluid/scripts/helpers/utils.js
@@ -2,12 +2,12 @@
 
 'use strict';
 
-const crypto = require('crypto');
+const md5 = require('../utils/crypto');
 const { decodeURL } = require('hexo-util');
 const compareVersions = require('../../scripts/utils/compare-versions');
 
 hexo.extend.helper.register('md5', function(string) {
-  return crypto.createHash('md5').update(string).digest('hex');
+  return md5(string);
 });
 
 hexo.extend.helper.register('require_version', function(current, require) {
diff --git a/themes/fluid/scripts/helpers/wordcount.js b/themes/fluid/scripts/helpers/wordcount.js
index 1d8acea6..b4230947 100644
--- a/themes/fluid/scripts/helpers/wordcount.js
+++ b/themes/fluid/scripts/helpers/wordcount.js
@@ -5,8 +5,16 @@
 const { stripHTML } = require('hexo-util');
 
 const getWordCount = (post) => {
+  const lang = post.lang.toLowerCase();
+  // post.origin is the original post content of hexo-blog-encrypt
+  const content = stripHTML(post.origin || post.content).replace(/\r?\n|\r/g, '').replace(/\s+/g, '');
+
   if (!post.wordcount) {
-    post.wordcount = stripHTML(post.content).replace(/\r?\n|\r/g, '').replace(/\s+/g, '').length;
+    if (['zh-cn', 'zh-hk', 'zh-tw'].includes(lang)) {
+      post.wordcount = (content.match(/[\u4E00-\u9FA5]/g) || []).length;
+    } else {
+      post.wordcount = (content.replace(/[\u4E00-\u9FA5]/g, '').match(/[a-zA-Z0-9_\u0392-\u03c9\u0400-\u04FF]+|[\u4E00-\u9FFF\u3400-\u4dbf\uf900-\ufaff\u3040-\u309f\uac00-\ud7af\u0400-\u04FF]+|[\u00E4\u00C4\u00E5\u00C5\u00F6\u00D6]+|\w+/g) || []).length;
+    }
   }
   return post.wordcount;
 };
diff --git a/themes/fluid/scripts/tags/fold.js b/themes/fluid/scripts/tags/fold.js
new file mode 100644
index 00000000..bbddbf8f
--- /dev/null
+++ b/themes/fluid/scripts/tags/fold.js
@@ -0,0 +1,20 @@
+const md5 = require('../utils/crypto');
+
+hexo.extend.tag.register('fold', (args, content) => {
+  args = args.join(' ').split('@');
+  const classes = args[0] || 'default';
+  const text = args[1] || '';
+  const id = 'collapse-' + md5(content).slice(0, 8);
+
+  return `
+    <div class="fold">
+      <div class="fold-title fold-${classes.trim()} collapsed" data-toggle="collapse" href="#${id}" role="button" aria-expanded="false" aria-controls="${id}">
+        <div class="fold-arrow">▶</div>${text}
+      </div>
+      <div class='fold-content collapse' id="${id}">
+        ${hexo.render.renderSync({ text: content, engine: 'markdown' }).split('\n').join('')}
+      </div>
+    </div>`;
+}, {
+  ends: true
+});
diff --git a/themes/fluid/scripts/utils/crypto.js b/themes/fluid/scripts/utils/crypto.js
new file mode 100644
index 00000000..9f1007a0
--- /dev/null
+++ b/themes/fluid/scripts/utils/crypto.js
@@ -0,0 +1,9 @@
+'use strict';
+
+const crypto = require('crypto');
+
+const md5 = (content) => {
+  return crypto.createHash('md5').update(content).digest('hex');
+}
+
+module.exports = md5;
diff --git a/themes/fluid/source/css/_pages/_base/color-schema.styl b/themes/fluid/source/css/_pages/_base/color-schema.styl
index 11406011..661e37bf 100644
--- a/themes/fluid/source/css/_pages/_base/color-schema.styl
+++ b/themes/fluid/source/css/_pages/_base/color-schema.styl
@@ -20,6 +20,8 @@
   --button-hover-bg-color $button-hover-bg-color
   --highlight-bg-color $highlight-bg-color
   --inlinecode-bg-color $inlinecode-bg-color
+  --fold-title-color $text-color
+  --fold-border-color $line-color
 
 dark-colors()
   --body-bg-color $body-bg-color-dark
@@ -42,6 +44,8 @@ dark-colors()
   --button-hover-bg-color $button-hover-bg-color-dark
   --highlight-bg-color $highlight-bg-color-dark
   --inlinecode-bg-color $inlinecode-bg-color-dark
+  --fold-title-color $text-color
+  --fold-border-color $line-color
 
   img
     -webkit-filter brightness(.9)
diff --git a/themes/fluid/source/css/_pages/_index/index.styl b/themes/fluid/source/css/_pages/_index/index.styl
index 174791bc..c3d17cc1 100644
--- a/themes/fluid/source/css/_pages/_index/index.styl
+++ b/themes/fluid/source/css/_pages/_index/index.styl
@@ -41,7 +41,7 @@
 
 .index-excerpt
   color var(--sec-text-color)
-  margin 0.5rem 0 0.5rem 0
+  margin 0.5rem 0
   height calc(1.4rem * 3)
   overflow hidden
   display flex
@@ -73,3 +73,8 @@
 
     .index-pin
       font-size 1.25rem
+
+  .index-excerpt
+    height auto
+    max-height calc(1.4rem * 3)
+    margin 0.25rem 0
diff --git a/themes/fluid/source/css/_pages/_post/post-tag.styl b/themes/fluid/source/css/_pages/_post/post-tag.styl
index e06819d9..5be46992 100644
--- a/themes/fluid/source/css/_pages/_post/post-tag.styl
+++ b/themes/fluid/source/css/_pages/_post/post-tag.styl
@@ -1,3 +1,53 @@
+// fold
+.fold
+  margin 1rem 0
+  border 0.5px solid var(--fold-border-color)
+  position relative
+  clear both
+  border-radius 0.125rem
+
+  .fold-title
+    color var(--fold-title-color)
+    padding 0.5rem 0.75rem
+    font-size 0.9rem
+    font-weight bold
+    border-radius 0.125rem
+
+    &:not(.collapsed) > .fold-arrow
+      transform rotate(90deg)
+      transform-origin center center
+
+    .fold-arrow
+      display inline-block
+      margin-right 0.35rem
+      transition transform .3s ease-out
+
+  .fold-content
+    & > *
+      margin 0
+
+    & > p
+      padding 1rem 1rem
+
+.fold-default
+  background rgba(#bbbbbb, 0.25)
+
+.fold-primary
+  background rgba(#b7a0e0, 0.25)
+
+.fold-info
+  background rgba(#a0c5e4, 0.25)
+
+.fold-success
+  background rgba(#aedcae, 0.25)
+
+.fold-warning
+  background rgba(#f8d6a6, 0.25)
+
+.fold-danger
+  background rgba(#eca9a7, 0.25)
+
+
 // note
 .note
   padding 0.75rem
diff --git a/themes/fluid/source/js/color-schema.js b/themes/fluid/source/js/color-schema.js
index 93924ca8..5b1b75c2 100644
--- a/themes/fluid/source/js/color-schema.js
+++ b/themes/fluid/source/js/color-schema.js
@@ -11,6 +11,7 @@
   var defaultColorSchemaAttributeName = 'data-default-color-scheme';
   var colorToggleButtonSelector = '#color-toggle-btn';
   var colorToggleIconSelector = '#color-toggle-icon';
+  var iframeSelector = 'iframe';
 
   function setLS(k, v) {
     try {
@@ -247,6 +248,7 @@
           theme: giscusTheme,
         }
       };
+      giscus.style.cssText += 'color-scheme: normal;';
       giscus.contentWindow.postMessage({ 'giscus': message }, 'https://giscus.app');
     }
   }
@@ -276,4 +278,9 @@
       }
     }
   });
+
+  Fluid.utils.waitElementLoaded(iframeSelector, function() {
+    applyCustomColorSchemaSettings();
+  });
+  
 })(window, document);