diff --git a/README.md b/README.md
index 95fddfb..5714098 100644
--- a/README.md
+++ b/README.md
@@ -7,10 +7,13 @@
 
 ## What
 
-SQL Chat is a chat-based SQL Client.
+SQL Chat is a chat-based SQL Client to answer database questions and query database using natural
+language.
 
 ![Screenshot](https://raw.githubusercontent.com/bytebase/sqlchat/main/public/screenshot1.webp)
 
+![Screenshot](https://raw.githubusercontent.com/bytebase/sqlchat/main/public/screenshot2.webp)
+
 ## Why
 
 As we enter the [Developer Tools 2.0 era](https://www.sequoiacap.com/article/ai-powered-developer-tools/),
@@ -27,8 +30,10 @@ SQL Chat is built by Next.js, it supports following databases and will add more
 
 ## Data Privacy
 
-All database conenction configs are stored locally in your browser. You can also visit settings to
-clear the data.
+- All database conenction configs are stored locally in your browser. You can also visit settings to
+  clear the data.
+
+- Only the database schema will be sent to the OpenAI API. No table data will be sent to OpenAI API.
 
 ## Local Development
 
diff --git a/public/screenshot2.webp b/public/screenshot2.webp
new file mode 100644
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