diff --git a/README.md b/README.md
index 868dd2ccff..0cf09c3ee9 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,10 @@ This is the BNB Chain Knowledge Base documentation for the BNB Chain developers.
 ## Commands
 
 * `mkdocs new [dir-name]` - Create a new project.
-* `mkdocs serve` - Start the live-reloading docs server.
+* `mkdocs serve` - mkdocs.yml    # The configuration file.
+docs/
+    index.md  # The documentation homepage.
+    ...       # Other markdown pages, images and other files. the live-reloading docs server.
 * `mkdocs build` - Build the documentation site.
 * `mkdocs -h` - Print help message and exit.