diff --git a/docs/_data/authors.yml b/docs/_data/authors.yml
index ef818acd..fcf22b93 100644
--- a/docs/_data/authors.yml
+++ b/docs/_data/authors.yml
@@ -397,3 +397,13 @@ conrad:
     - label: "GitHub"
       icon: "fab fa-fw fa-github"
       url: "https://github.com/IronConrad"
+
+Leo Song:
+  name: "Leo Song"
+  bio: "散装产品经理"
+  avatar: ""
+  membership: chair
+  links:
+    - label: "GitHub"
+      icon: ""
+      url: "https://github.com/scy1207-git"
diff --git a/docs/_posts/2021-09-03-seminar-minutes-2021-05.md b/docs/_posts/2021-09-03-seminar-minutes-2021-05.md
index ef0e768a..dd418e07 100644
--- a/docs/_posts/2021-09-03-seminar-minutes-2021-05.md
+++ b/docs/_posts/2021-09-03-seminar-minutes-2021-05.md
@@ -48,7 +48,18 @@ header:
     height:0;
     overflow:hidden;
 ">
-<iframe width="560" height="315" src="https://www.youtube.com/watch?v=iAhnUXS43uo" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
+<iframe width="560" height="315" src="https://youtu.be/4iLPbOLiqrA" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+</div>
+
+<div class="video-container" style="
+    position: relative;
+    padding-bottom:56.25%;
+    padding-top:30px;
+    height:0;
+    overflow:hidden;
+">
+<iframe width="560" height="315" src="https://youtu.be/ByDOAKaSkcE" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 </div>
 
 <div class="video-container" style="
@@ -58,7 +69,7 @@ header:
     height:0;
     overflow:hidden;
 ">
-<iframe width="560" height="315" src="https://www.youtube.com/watch?v=-KOsBccONAE" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://youtu.be/_x9Noxn4cMM" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 </div>
 
 ## Talks
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diff --git a/docs/assets/2021/seminar-05/authentication-authorization-for-the-wechaty-chatbot.pdf b/docs/assets/2021/seminar-05/authentication-authorization-for-the-wechaty-chatbot.pdf
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diff --git a/docs/assets/2021/seminar-05/zhuximen00.jpg b/docs/assets/2021/seminar-05/zhuximen00.jpg
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