diff --git a/notes/设计模式.md b/notes/设计模式.md
index f20a807a..dfa0a80d 100644
--- a/notes/设计模式.md
+++ b/notes/设计模式.md
@@ -2557,6 +2557,10 @@ public class Client {
         remoteControl1.on();
         remoteControl1.off();
         remoteControl1.tuneChannel();
+        RemoteControl remoteControl2 = new ConcreteRemoteControl2(new Sony());
+        remoteControl2.on();
+        remoteControl2.off();
+        remoteControl2.tuneChannel();
     }
 }
 ```