diff --git a/README.md b/README.md
index e0eaee2..fd8613d 100644
--- a/README.md
+++ b/README.md
@@ -2,10 +2,10 @@
 
 This repository contains the source code for the Sendbird UIKit React tutorials.
 
-Each folder contains the source code for the tutorial at the specific stage. The `before` folder contains the source code before the tutorial, and the `after` folder contains the source code after the tutorial.
+Each folder contains the source code for the tutorial at the specific stage. The `before` folder contains the source codes you should have before the tutorial. On the other hand, the `after` folder contains the source codes after completing the application.
 
 - [integrate-with-existing-app](https://sendbird.com/docs/chat/uikit/v3/react/tutorial/integrate-with-existing-app)
 
 ## Related resources
 - [Sendbird UIKit React documentation](https://sendbird.com/docs/chat/uikit/v3/react/overview)
-- [Sendbird UIKit React SDK](https://github.com/sendbird/sendbird-uikit-react)
\ No newline at end of file
+- [Sendbird UIKit React SDK](https://github.com/sendbird/sendbird-uikit-react)