diff --git a/git-push.sh b/git-push.sh
index c0991a6..876652d 100755
--- a/git-push.sh
+++ b/git-push.sh
@@ -7,6 +7,7 @@ push () {
     git add images/*.png
     git add pdfs/*.pdf
     git add mindmaps/*.mm
+    git add mindmaps/*.md
     git commit -m "$1"
     push_success=0
     push_tries=0
diff --git a/mindmaps/README.md b/mindmaps/README.md
new file mode 100644
index 0000000..755e129
--- /dev/null
+++ b/mindmaps/README.md
@@ -0,0 +1 @@
+这些mindmaps是Freeplane的。所以要用[此软件](https://www.freeplane.org/wiki/index.php/Main_Page)来打开。