diff --git a/challenges/intermediate-empty-tuple/hints.md b/challenges/intermediate-empty-tuple/hints.md
new file mode 100644
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+++ b/challenges/intermediate-empty-tuple/hints.md
@@ -0,0 +1 @@
+Check out [annotating-tuples](https://docs.python.org/zh-cn/3/library/typing.html#annotating-tuples)
diff --git a/challenges/intermediate-empty-tuple/question.py b/challenges/intermediate-empty-tuple/question.py
new file mode 100644
index 0000000..2d82c51
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+++ b/challenges/intermediate-empty-tuple/question.py
@@ -0,0 +1,14 @@
+"""
+TODO:
+
+foo should accept a empty tuple argument.
+"""
+
+
+def foo(x):
+    pass
+
+
+## End of your code ##
+foo(())
+foo((1))  # expect-type-error
diff --git a/challenges/intermediate-empty-tuple/solution.py b/challenges/intermediate-empty-tuple/solution.py
new file mode 100644
index 0000000..d521c1b
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+++ b/challenges/intermediate-empty-tuple/solution.py
@@ -0,0 +1,14 @@
+"""
+TODO:
+
+foo should accept a empty tuple argument.
+"""
+
+
+def foo(x: tuple[()]):
+    pass
+
+
+## End of your code ##
+foo(())
+foo((1))  # expect-type-error