diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..0ea1340
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "GM-Standards"]
+	path = GM-Standards
+	url = git@github.com:xueqing/GM-Standards.git
diff --git a/GM-Standards b/GM-Standards
new file mode 160000
index 0000000..e1b8076
--- /dev/null
+++ b/GM-Standards
@@ -0,0 +1 @@
+Subproject commit e1b80769a2003d5036ff1a034b68b41e8bd42089