diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c9aa5e2
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "epub"]
+	path = epub
+	url = https://github.com/geek1011/ePubViewer
diff --git a/epub b/epub
new file mode 160000
index 0000000..532a2fd
--- /dev/null
+++ b/epub
@@ -0,0 +1 @@
+Subproject commit 532a2fdbd1206dca6144292bb93a68764f9ff18d
diff --git a/index.md b/index.md
index ccb312c..f969e9c 100644
--- a/index.md
+++ b/index.md
@@ -6,6 +6,8 @@
 
 [food](reads/food)
 
+[epub](epub/index.html)
+
 [posture](reads/posture)
 
 [quicken](reads/quicken)