diff --git a/docs/sql/z-order-introduction.md b/docs/sql/z-order-introduction.md
index b787c2b8155..85564d7a882 100644
--- a/docs/sql/z-order-introduction.md
+++ b/docs/sql/z-order-introduction.md
@@ -15,8 +15,6 @@
  - limitations under the License.
  -->
 
-<!-- DO NOT MODIFY THIS FILE DIRECTLY, IT IS AUTO GENERATED BY [org.apache.kyuubi.engine.spark.udf.KyuubiDefinedFunctionSuite] -->
-
 <div align=center>
 
 ![](../imgs/kyuubi_logo.png)
@@ -25,13 +23,13 @@
 
 # Z-order introduction
 
-## introduction
+## Introduction
 
-The following picture shows the workflow of z-order.
+Let describe the picture shows the workflow of z-order.
 
 ![](../imgs/extension/zorder-workflow.png)
 
-### Supported table
+### Supported table format
 
 | Table Format | Supported |
 |--------------|-----------|