LearningOS
diff --git a/‎guide/source/chapter1/0intro.rst
-4 b/‎guide/source/chapter1/0intro.rst
-4
diff --git a/‎os7-ref/src/link_app.S b/‎os7-ref/src/link_app.S
diff --git a/‎os8-ref/src/link_app.S b/‎os8-ref/src/link_app.S
@@ -59,10 +59,6 @@
 
 获取本章代码：
 
-.. code-block:: console
-
-获取本章代码：
-
 .. code-block:: console
 
    $ git clone ``gitaddr of github-classroom-build-lab0-0``