diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..fcb78ac
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "third_party/tools"]
+	path = third_party/tools
+	url = git@git.kingsome.cn:server_common/tools.git
diff --git a/third_party/tools b/third_party/tools
new file mode 160000
index 0000000..20a9680
--- /dev/null
+++ b/third_party/tools
@@ -0,0 +1 @@
+Subproject commit 20a9680f4a4322148e9d21d3a17ec8b91cc4d5e4