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markdown-pages/en/tidb/master/vector-search-integrate-with-llamaindex.md

@@ -82,6 +82,13 @@ from llama_index.vector_stores.tidbvector import TiDBVectorStore
 
 ### Step 3. Configure environment variables
 
+Configure the environment variables depending on the TiDB deployment option you've selected.
+
+<SimpleTab>
+<div label="TiDB Cloud Serverless">
+
+For a TiDB Cloud Serverless cluster, take the following steps to obtain the cluster connection string and configure environment variables:
+
 1. Navigate to the [**Clusters**](https://tidbcloud.com/console/clusters) page, and then click the name of your target cluster to go to its overview page.
 
 2. Click **Connect** in the upper-right corner. A connection dialog is displayed.