diff --git a/asciibook.asc b/asciibook.asc
new file mode 100644
index 000000000..695307aaf
--- /dev/null
+++ b/asciibook.asc
@@ -0,0 +1,9 @@
+== Asciibook Introduction
+
+This website/eBook is only used as a demo for the Asciibook project and is not synchronized with Pro Git upstream.
+
+To read the latest Pro Git content, visit the official website: https://git-scm.com/book/en/v2.
+
+Asciibook is an eBook generator. The project address is https://github.com/asciibook/asciibook.
+
+You can download the book eBook generated by Asciibook here: https://github.com/asciibook/progit2/releases.
diff --git a/progit.asc b/progit.asc
index 4e39ab89a..a15a5fe31 100644
--- a/progit.asc
+++ b/progit.asc
@@ -11,6 +11,8 @@ Scott Chacon; Ben Straub
 
 ifdef::ebook-format[:leveloffset: -1]
 
+include::asciibook.asc[]
+
 [toc]
 == Table of Contents