diff --git a/.gitmodules b/.gitmodules
index 111611a..768e0ec 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -43,3 +43,6 @@
 [submodule "HuiyingLi"]
 	path = HuiyingLi
 	url = https://github.com/HuiyingLi/sp2014.11-731
+[submodule "bdlijiwei"]
+	path = bdlijiwei
+	url = https://github.com/bdlijiwei1/sp2014.11-731
diff --git a/bdlijiwei b/bdlijiwei
new file mode 160000
index 0000000..aa7e42e
--- /dev/null
+++ b/bdlijiwei
@@ -0,0 +1 @@
+Subproject commit aa7e42e8b1d76b7af2baf104194c707384654ca8