diff --git "a/src/\347\276\244\345\217\213\346\217\220\344\272\244/\347\254\25414\351\242\230/jacky.cpp" "b/src/\347\276\244\345\217\213\346\217\220\344\272\244/\347\254\25414\351\242\230/jacky.cpp"
new file mode 100644
index 00000000..d86b658d
--- /dev/null
+++ "b/src/\347\276\244\345\217\213\346\217\220\344\272\244/\347\254\25414\351\242\230/jacky.cpp"
@@ -0,0 +1,13 @@
+#include <iostream>
+
+#define ss
+
+namespace ss {
+    int a = 0;
+}
+
+int main()
+{
+    a = 100;
+    std::cout << ss::a << '\n';
+}