diff --git a/.gitmodules b/.gitmodules
index 13637d8..91b7153 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -26,3 +26,7 @@
 	path = examples/keyword/clang-tidy/sillycode
 	url = ssh://git@focs.ji.sjtu.edu.cn:2222/FOCS-dev/JOJ3-examples.git
 	branch = keyword/clang-tidy/sillycode
+[submodule "examples/clang-tidy/sillycode"]
+	path = examples/clang-tidy/sillycode
+	url = ssh://git@focs.ji.sjtu.edu.cn:2222/FOCS-dev/JOJ3-examples.git
+	branch = clang-tidy/sillycode
diff --git a/examples/clang-tidy/sillycode b/examples/clang-tidy/sillycode
new file mode 160000
index 0000000..adb2715
--- /dev/null
+++ b/examples/clang-tidy/sillycode
@@ -0,0 +1 @@
+Subproject commit adb271587b82936a092a1675213a4924782e9018