diff --git a/layouts/partials/after-content-js.html b/layouts/partials/after-content-js.html
index ff0c549..1ee3f17 100644
--- a/layouts/partials/after-content-js.html
+++ b/layouts/partials/after-content-js.html
@@ -14,6 +14,8 @@
 <!-- fancybox -->
 <script src="https://cdn.jsdelivr.net/npm/@fancyapps/ui/dist/fancybox.umd.js"></script>
 
+{{/* a pangu support */}}
+{{ if .Site.Params.features.pangu }}
 <!-- pangu.js -->
 <script>
     pangu.spacingElementByClassName('moment-note');
@@ -23,4 +25,5 @@
         // listen to any DOM change and automatically perform spacing via MutationObserver()
         pangu.autoSpacingPage();
     });
-</script>
\ No newline at end of file
+</script>
+{{ end }}
\ No newline at end of file
diff --git a/layouts/partials/head.html b/layouts/partials/head.html
index 19f0004..aaa271b 100644
--- a/layouts/partials/head.html
+++ b/layouts/partials/head.html
@@ -41,9 +41,11 @@
 <link rel="stylesheet" href="https://unpkg.com/purecss@2.0.6/build/grids-min.css">
 <link rel="stylesheet" href="https://unpkg.com/purecss@2.0.6/build/grids-responsive-min.css">
 
-<!-- pangu support (js in the end before the body closing tag) -->
-<!-- todo make it optional -->
+{{/* pangu support: js in the end before the body closing tag */}}
+{{ if .Site.Params.features.pangu }}
+<!-- pangu support -->
 <script src="https://cdnjs.cloudflare.com/ajax/libs/pangu/4.0.7/pangu.min.js"></script>
+{{ end }}
 
 <!-- website title -->
 <title>{{ .Site.Params.title }}</title>
diff --git a/layouts/partials/link-block.html b/layouts/partials/link-block.html
index 60d2bb1..3d4a9b9 100644
--- a/layouts/partials/link-block.html
+++ b/layouts/partials/link-block.html
@@ -1,39 +1,45 @@
+{{/* BEGIN parse the input parameter */}}
+{{/* PART 1 default link */}}
 {{ $resource_type := "link" }}
+
 {{ $logo_file := "default_link_logo.png" }}
 
+{{/* 1.1 Wechat articles */}}
 {{ if eq 1 (len (findRE `(https?://)?mp\.weixin\.qq\.com([-a-zA-Z0-9()@:%\+.~#?&/=_]*)` .a)) }}
     {{ $logo_file = "wechat.png"}}
 {{ end }}
 
+{{/* 1.2 Bilibili webpage */}}
 {{ if eq 1 (len (findRE `(https?://)?(www\.)?bilibili\.com/video/([-a-zA-Z0-9()@:%\+.~#?&/=_]*)` .a)) }}
     {{ $logo_file = "bilibili.png"}}
 {{ end }}
 
+{{/* 1.3 github repo */}}
 {{ if eq 1 (len (findRE `(https?://)?(www\.)?github\.com([-a-zA-Z0-9()@:%\+.~#?&/=_]*)` .a)) }}
     {{ $logo_file = "github.png"}}
 {{ end }}
 
+{{/* 1.4.1 zhihu answers */}}
 {{ if eq 1 (len (findRE `(https?://)?(www\.)?zhihu\.com/question/([0-9]*)/answer/[0-9]*` .a)) }}
     {{ $logo_file = "zhihu.svg"}}
 {{ end }}
 
+{{/* 1.4.2 zhihu articles */}}
 {{ if eq 1 (len (findRE `(https?://)?zhuanlan\.zhihu\.com/p/([0-9]*)` .a)) }}
     {{ $logo_file = "zhihu.svg"}}
 {{ end }}
 
+{{/* PART 2 other link type */}}
+{{/* 2.1 netease music */}}
 {{ $netease_music_song_id := "0" }}
 {{ if eq 1 (len (findRE `(https?://)?music\.163\.com/song\?id=([0-9]*)([-a-zA-Z0-9()@:%\+.~#?&/=_]*)` .a)) }}
     {{ $resource_type = "netease_music" }}
     {{ $netease_music_song_id = replaceRE `(https?://)?music\.163\.com/song\?id=([0-9]*)([-a-zA-Z0-9()@:%\+.~#?&/=_]*)` "$2" .a }}
 {{ end }}
 
-{{ if eq "netease_music" $resource_type}}
-<iframe 
-    frameborder="no" border="0" marginwidth="0" marginheight="0" width=330 height=86 class="netease_music_player"
-    src="//music.163.com/outchain/player?type=2&id={{ $netease_music_song_id }}&auto=1&height=66">
-</iframe>
-{{ end }}
 
+{{/* BEGIN generate output */}}
+{{/* PART 1 default link */}}
 {{ if eq "link" $resource_type }}
 <div class="share-link-block">
     <table class="link-table">
@@ -52,4 +58,12 @@
     </tr>
     </table>
 </div>
-{{ end }}
\ No newline at end of file
+{{ end }}
+
+{{/* PART 2 other link type */}}
+{{ if eq "netease_music" $resource_type}}
+<iframe 
+    frameborder="no" border="0" marginwidth="0" marginheight="0" width=330 height=86 class="netease_music_player"
+    src="//music.163.com/outchain/player?type=2&id={{ $netease_music_song_id }}&auto=1&height=66">
+</iframe>
+{{ end }}