diff --git a/doc/FrankCui's homework b/doc/FrankCui's homework
new file mode 100644
index 0000000000000000000000000000000000000000..3954aba9426a2704ffa8c484f8f1b3620b9bd06a
--- /dev/null
+++ b/doc/FrankCui's homework	
@@ -0,0 +1 @@
+FrankCui(Lihao Cui)'s meaningless pull request.
\ No newline at end of file