diff --git a/vite/public/assets/debug-1.mp3 b/vite/public/assets/debug-1.mp3
new file mode 100644
index 0000000..b5b0ad4
Binary files /dev/null and b/vite/public/assets/debug-1.mp3 differ
diff --git a/vite/public/assets/debug-2.mp3 b/vite/public/assets/debug-2.mp3
new file mode 100644
index 0000000..de0d7f1
Binary files /dev/null and b/vite/public/assets/debug-2.mp3 differ
diff --git a/vite/public/cuelist_0923.json b/vite/public/cuelist_0923.json
index bb2529e..184a902 100644
--- a/vite/public/cuelist_0923.json
+++ b/vite/public/cuelist_0923.json
@@ -176,8 +176,7 @@
             "auto": false,
             "audioFile": "assets/combine/Q6_管家announce_0919.mp3",
             "layer":"announce",
-            "fadeout": true,
-            "callback":"exportFile"
+            "fadeout": true
         },
         { 
             "id": 7, 
@@ -186,6 +185,33 @@
             "description": "Ending",
             "status":"end",
             "callback":"fadeout"
+        },
+        {
+            "id": 101,
+            "name": "Q101",
+            "type": "debug",
+            "description": "DEBUG_MODE",
+            "audioFile": "assets/debug-1.mp3",
+            "loop": true,
+            "status":"intro",
+            "callback":"numpad",
+            "nextcue": 102,
+            "numpad_type":"password"
+        },
+        {
+            "id": 102,
+            "name": "Q102",
+            "type": "debug",
+            "description": "DEBUG_MODE",
+            "audioFile": "assets/debug-2.mp3",
+            "auto": true,
+            "nextcue": 103
+        },
+        {
+            "id": 103,
+            "name": "Q103",
+            "type": "chat",
+            "description": "DEBUG_MODE_CHAT"
         }
     ]
 }
diff --git a/vite/src/pages/flow_free.jsx b/vite/src/pages/flow_free.jsx
index 19c30ca..e58a68c 100644
--- a/vite/src/pages/flow_free.jsx
+++ b/vite/src/pages/flow_free.jsx
@@ -60,6 +60,8 @@ export function FreeFlow(){
 
     const [padInput, setPadInput] = useState(null);
 
+    const [showMessage, setShowMessage] = useState(false);
+
     const { userId, setUserId, getFileId, setPassword, reset:resetUser, uploadHistory, setSummary, summary,setChoice,choice, getUploadFolder,getDataId, writeSheet } = useUser();
 
     const refTimer=useRef();
@@ -83,6 +85,7 @@ export function FreeFlow(){
     const refHintTimeout=useRef();
 
     const refFadeOutInterval=useRef();
+    const refVolDownInterval=useRef();
 
     const { history, status, reset, sendMessage, setStatus, audioOutput, setAudioOutput, stop:stopChat, 
             audioUrl }=useChat();
@@ -183,6 +186,26 @@ export function FreeFlow(){
             refAudioAnnounce.current.play().catch(error => {
                 console.error("Audio announce playback error:", error);
             });
+
+
+            // lower audio
+            if(refAudio.current) {
+                // fade out current audio
+                if(refVolDownInterval.current){
+                    clearInterval(refVolDownInterval.current);
+                }
+
+                const dest=0.5;
+                let fadeOutInterval = setInterval(() => {
+                   if (refAudio.current.volume > dest) {
+                        refAudio.current.volume =Math.max(dest,  refAudio.current.volume - 1.0/(AUDIO_FADE_TIME/100)); // Decrease volume gradually
+                    } else {
+                        clearInterval(fadeOutInterval);
+                    }
+                }, 100);
+                refVolDownInterval.current=fadeOutInterval;
+            }
+
             return;
         }
 
@@ -659,6 +682,11 @@ export function FreeFlow(){
         });
     }
 
+    function blurText(text) {
+        if(!text) return '';
+        return text.replace(/./g, '*');
+    }
+
     useEffect(()=>{
         if(audioInput && isMicrophoneAvailable) {
            
@@ -894,18 +922,18 @@ export function FreeFlow(){
                     </table>
                 </div>
             </section>
-            <section className="flex-1 self-stretch overflow-y-auto flex flex-col justify-end gap-2">
-                 <div ref={refContainer} className="flex-1 flex flex-col overflow-y-auto gap-2">
+            <section className="flex-1 self-stretch overflow-y-auto flex flex-col justify-end gap-2 ">
+                 <div ref={refContainer} className="flex-1 flex flex-col overflow-y-auto gap-2 blur-sm" >
                     {history?.map((msg, index) => (
                         <div key={index} className={`w-5/6 ${msg.role=='user'? 'self-end':''}`}>
-                            <div className={`${msg.role=='user'? 'bg-green-300':'bg-pink-300'} px-2`}>{msg.content}</div>
-                            {msg.prompt && <div className="text-xs bg-gray-200">{msg.prompt}</div>}
+                            <div className={`${msg.role=='user'? 'bg-green-300':'bg-pink-300'} px-2`}>{blurText(msg.content)}</div>
+                            {msg.prompt && <div className="text-xs bg-gray-200">{blurText(msg.prompt)}</div>}
                         </div>
                     ))}
                     {summary && <div className="w-full self-center bg-blue-200 px-2">{summary}</div>}
                 </div>
                 <textarea ref={refInput} name="message" rows={2} 
-                    className={`w-full border-1 resize-none p-2 disabled:bg-gray-500`}
+                    className={`w-full border-1 resize-none p-2 disabled:bg-gray-500 blur-sm`}
                     disabled={chatStatus!=ChatStatus.User && chatStatus!=ChatStatus.Message}></textarea>       
                 <div className="flex flex-row justify-end gap-2 flex-wrap">
                     <span className="flex flex-row gap-1">