diff --git a/app/layout.tsx b/app/layout.tsx
index 6f56dd0..c5f5285 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -82,7 +82,7 @@ export default async function RootLayout({ children }) {
           sidebar={{ defaultMenuCollapseLevel: 1 }}
           pageMap={pageMap}
           // TODO: fix algolia search
-          search={<AlgoliaSearch />}
+          // search={<AlgoliaSearch />}
         >
           {children}
           {/* SpeedInsights in vercel */}
diff --git a/content/Math4201/Math4201_L22.md b/content/Math4201/Math4201_L22.md
index 3cc790b..2095df4 100644
--- a/content/Math4201/Math4201_L22.md
+++ b/content/Math4201/Math4201_L22.md
@@ -160,4 +160,3 @@ Therefore, $f(X)$ is connected.
 
 </details>
 
-
diff --git a/content/Math4201/_meta.js b/content/Math4201/_meta.js
index c6b0d10..e9d9a76 100644
--- a/content/Math4201/_meta.js
+++ b/content/Math4201/_meta.js
@@ -25,4 +25,5 @@ export default {
     Math4201_L19: "Topology I (Lecture 19)",
     Math4201_L20: "Topology I (Lecture 20)",
     Math4201_L21: "Topology I (Lecture 21)",
+    Math4201_L22: "Topology I (Lecture 22)",
 }
diff --git a/content/index.md b/content/index.md
index 6e9265c..45ec37c 100644
--- a/content/index.md
+++ b/content/index.md
@@ -1,8 +1,7 @@
 # Welcome to NoteNextra
 
 > [!WARNING]
->
-> This site use [Algolia Search](https://www.algolia.com/) to search the content. However, due to some unknown reasons, when the index page is loaded, the search bar is calling default PageFind package from Nextra. **If you find the search bar is not working**, please try to redirect to another page and then back to the index page or search in another page.
+><!-- > This site use [Algolia Search](https://www.algolia.com/) to search the content. However, due to some unknown reasons, when the index page is loaded, the search bar is calling default PageFind package from Nextra. **If you find the search bar is not working**, please try to redirect to another page and then back to the index page or search in another page. -->
 >
 > This site updates in a daily basis. But the sidebar is not. **If you find some notes are not shown on sidebar but the class already ends more than 24 hours**, please try to access the page directly via the URL. (for example, change the URL to `.../Math4201/Math4201_L{number}` to access the note of the lecture `Math4201_L{number}`)