diff --git a/Assets/Scenes/main.unity b/Assets/Scenes/main.unity
index 9cfa803..4c03394 100644
--- a/Assets/Scenes/main.unity
+++ b/Assets/Scenes/main.unity
@@ -3285,11 +3285,14 @@ MonoBehaviour:
   m_GameObject: {fileID: 441640509}
   m_Enabled: 1
   m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: d5a0e43c7217447f9b4be5e2434520e4, type: 3}
+  m_Script: {fileID: 11500000, guid: 55eccc8daa89f482193b0fcb1aa0f2bc, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  _homeBgClip: {fileID: 0}
-  _experimentBgClip: {fileID: 0}
+  _homeBg: {fileID: 8300000, guid: 28a93a41087664f1d9f83a456d17928f, type: 3}
+  _experimentBg: {fileID: 8300000, guid: 4f431e6ae1b9f4b94a61c31fe630647a, type: 3}
+  BgVolume: 0.5
+  _basketballSfx: {fileID: 8300000, guid: 25ff553be9c84452ab0a39fbfd06be77, type: 3}
+  _manCallSfx: {fileID: 8300000, guid: bc5816d37e79f4461a243f63cd20c925, type: 3}
 --- !u!1 &458363765
 GameObject:
   m_ObjectHideFlags: 0
@@ -9704,12 +9707,6 @@ MonoBehaviour:
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   _examModeDesc: "\u25CF \u8003\u6838\u8BC4\u4F30\u6A21\u5F0F\uFF1A\u9650\u5B9A\u65F6\u95F4\uFF0C\u5B8C\u6210\u540E\u7CFB\u7EDF\u81EA\u52A8\u8BC4\u5206\uFF0C\u5E76\u63D0\u4F9B\u8BE6\u7EC6\u53CD\u9988\u62A5\u544A\u3002"
   _editorPreview: 0
-  _homeBgClip: {fileID: 8300000, guid: 28a93a41087664f1d9f83a456d17928f, type: 3}
-  _experimentBgClip: {fileID: 8300000, guid: 4f431e6ae1b9f4b94a61c31fe630647a, type: 3}
-  _womanClips:
-  - {fileID: 8300000, guid: 6934b8b2c79df41118a058e984de2a7b, type: 3}
-  - {fileID: 8300000, guid: 0f561ebe499594da29e31277de2f8a1f, type: 3}
-  - {fileID: 8300000, guid: 845a704b4410b4393ab9327bfaf9d3ec, type: 3}
 --- !u!1 &1654726178
 GameObject:
   m_ObjectHideFlags: 0
diff --git a/Assets/Scripts/Interaction/PingClickHandler.cs b/Assets/Scripts/Interaction/PingClickHandler.cs
new file mode 100644
index 0000000..f0ec818
--- /dev/null
+++ b/Assets/Scripts/Interaction/PingClickHandler.cs
@@ -0,0 +1,60 @@
+using UnityEngine;
+
+/// <summary>
+/// 挂在每个 ping 对象上。带蓝色闪烁描边，点击后显示对应 chanrao 并隐藏自己。
+/// 从 ping.004 开始作为第一个（reverse order）。
+/// </summary>
+public class PingClickHandler : MonoBehaviour
+{
+    public GameObject chanraoObject;
+    public GameObject nextPing;
+
+    private MeshRenderer _meshRenderer;
+
+    void Start()
+    {
+        _meshRenderer = GetComponent<MeshRenderer>();
+        if (_meshRenderer == null) _meshRenderer = GetComponentInChildren<MeshRenderer>();
+        StartCoroutine(BlinkOutline());
+    }
+
+    void OnEnable()
+    {
+        _meshRenderer = GetComponent<MeshRenderer>();
+        if (_meshRenderer == null) _meshRenderer = GetComponentInChildren<MeshRenderer>();
+        if (_meshRenderer != null) _meshRenderer.enabled = true;
+        StopAllCoroutines();
+        StartCoroutine(BlinkOutline());
+    }
+
+    System.Collections.IEnumerator BlinkOutline()
+    {
+        while (true)
+        {
+            if (_meshRenderer != null)
+                _meshRenderer.enabled = !_meshRenderer.enabled;
+            yield return new WaitForSeconds(0.4f);
+        }
+    }
+
+    void OnMouseDown()
+    {
+        Debug.Log($"[PingClick] {name} 被点击");
+
+        if (chanraoObject != null)
+        {
+            chanraoObject.SetActive(true);
+            Debug.Log($"[PingClick] {chanraoObject.name} 已显示");
+        }
+
+        StopAllCoroutines();
+        if (_meshRenderer != null) _meshRenderer.enabled = false;
+        gameObject.SetActive(false);
+
+        if (nextPing != null)
+        {
+            nextPing.SetActive(true);
+            Debug.Log($"[PingClick] {name} → {nextPing.name} 已激活");
+        }
+    }
+}
diff --git a/Assets/Scripts/Interaction/PingClickHandler.cs.meta b/Assets/Scripts/Interaction/PingClickHandler.cs.meta
new file mode 100644
index 0000000..83bcedc
--- /dev/null
+++ b/Assets/Scripts/Interaction/PingClickHandler.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 4f940d2edab2d44ad98aa707038ce89c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/Interaction/TouchPositionHandler.cs b/Assets/Scripts/Interaction/TouchPositionHandler.cs
index 5bb9c76..2ce938c 100644
--- a/Assets/Scripts/Interaction/TouchPositionHandler.cs
+++ b/Assets/Scripts/Interaction/TouchPositionHandler.cs
@@ -53,6 +53,10 @@ public class TouchPositionHandler : MonoBehaviour
             Debug.Log($"[TouchPosition] 播放语音: {voiceClip.name}");
         }
 
+                // 点击point1时平滑切换到camera3
+        if (transform.GetSiblingIndex() == 0)
+            StartCoroutine(SwitchToCamera3Smooth());
+
         int stepIndex = transform.GetSiblingIndex() + 1;
         var sm = FindObjectOfType<StepManager>();
         if (sm != null) sm.RecordWomanStep(stepIndex);
@@ -83,4 +87,44 @@ public class TouchPositionHandler : MonoBehaviour
         _sharedVoice.clip = voiceClip;
         _sharedVoice.Play();
     }
+    System.Collections.IEnumerator SwitchToCamera3Smooth()
+    {
+        var black = GameObject.Find("BlackScreenPanel");
+        var blackImg = black != null ? black.GetComponent<UnityEngine.UI.Image>() : null;
+        float duration = 0.8f;
+
+        // 渐入黑
+        if (black != null && blackImg != null)
+        {
+            black.SetActive(true);
+            for (float t = 0f; t < duration; t += Time.deltaTime)
+            {
+                blackImg.color = new Color(0, 0, 0, t / duration);
+                yield return null;
+            }
+            blackImg.color = Color.black;
+        }
+
+        // 切换摄像机
+        var cam2 = GameObject.Find("camera2");
+        var cam3 = GameObject.Find("camera3");
+        if (cam2 != null) { var c = cam2.GetComponent<Camera>(); if (c != null) c.enabled = false; }
+        if (cam3 != null) { var c = cam3.GetComponent<Camera>(); if (c != null) c.enabled = true; }
+        Debug.Log("[TouchPosition] camera2→camera3 平滑切换完成");
+
+        yield return new WaitForSeconds(0.2f);
+
+        // 渐出黑
+        if (black != null && blackImg != null)
+        {
+            for (float t = 0f; t < duration; t += Time.deltaTime)
+            {
+                blackImg.color = new Color(0, 0, 0, 1f - t / duration);
+                yield return null;
+            }
+            blackImg.color = new Color(0, 0, 0, 0);
+            black.SetActive(false);
+        }
+    }
+
 }
diff --git a/Assets/Scripts/UI/PageController.cs b/Assets/Scripts/UI/PageController.cs
index b7993a3..0572432 100644
--- a/Assets/Scripts/UI/PageController.cs
+++ b/Assets/Scripts/UI/PageController.cs
@@ -281,7 +281,14 @@ public class PageController : MonoBehaviour
         }
 
         var touch = GameObject.Find("touchArray");
-        if (touch != null && touch.transform.childCount > 0) { touch.transform.GetChild(0).gameObject.SetActive(true); Debug.Log("PageController: touchArray/point1 已显示"); }
+        if (touch != null && touch.transform.childCount > 0) { touch.transform.GetChild(0).gameObject.SetActive(true); Debug.Log("PageController: touchArray/point1 已显示");
+
+        // 激活第一个 ping (ping.004)
+        var mi = GameObject.Find("manInjury");
+        if (mi != null) {
+            var ping4 = mi.transform.Find("ping.004");
+            if (ping4 != null) { ping4.gameObject.SetActive(true); Debug.Log("PageController: ping.004 已激活"); }
+        } }
 
         var tipPanel = GameObject.Find("TipPanel");
         if (tipPanel != null) tipPanel.SetActive(true);