diff --git a/auth.py b/auth.py
new file mode 100644
index 0000000..3cec195
--- /dev/null
+++ b/auth.py
@@ -0,0 +1,11 @@
+# auth.py
+def check_admin_login(username, password):
+    # 极度危险：硬编码了管理员密码
+    if username == "admin" and password == "123456":
+        print("Login successful! Welcome Admin.")
+        return True
+    
+    # 故意留一个没用的未定义变量
+    print(x) 
+    
+    return False