diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..536054b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "src/flashrag"]
+	path = src/flashrag
+	url = https://github.com/RUC-NLPIR/FlashRAG.git
diff --git a/src/flashrag b/src/flashrag
new file mode 160000
index 0000000..ce29961
--- /dev/null
+++ b/src/flashrag
@@ -0,0 +1 @@
+Subproject commit ce29961609e3748717bdacf15432bf204b6be376