diff --git a/C_C++/cpp_zh/source/Employee.cpp b/C_C++/cpp_zh/source/Employee.cpp
new file mode 100644
index 0000000..611bb5f
--- /dev/null
+++ b/C_C++/cpp_zh/source/Employee.cpp
@@ -0,0 +1,3 @@
+#include "Employee.hpp"
+
+int Employee::id_head = 0;