diff --git a/Assets/Scripts/Core/UndoManager.cs b/Assets/Scripts/Core/UndoManager.cs
index 8be0adc..0d9ac55 100644
--- a/Assets/Scripts/Core/UndoManager.cs
+++ b/Assets/Scripts/Core/UndoManager.cs
@@ -61,35 +61,6 @@ public static class ActionHistory
             
             return true;
         }
-        else if (item.Type == ActionType.PingFirst)
-        {
-            // 如果在定位(第一阶段)，则重置所有的定位，退回到只有第一个点发光的状态
-            while (History.Count > 0 && History.Peek().Type == ActionType.PingFirst)
-            {
-                History.Pop();
-            }
-
-            var allPings = Object.FindObjectsOfType<PingClickHandler>(true);
-            foreach (var p in allPings)
-            {
-                if (p.chanraoObject != null) p.chanraoObject.SetActive(false);
-                
-                if (p.pingIndex == 0)
-                {
-                    p.gameObject.SetActive(true);
-                    p.ResetState();
-                }
-                else
-                {
-                    p.UndoShow();
-                }
-            }
-
-            var sm = Object.FindObjectOfType<StepManager>();
-            if (sm != null) sm.SetPingStepIndex(0);
-            
-            return true;
-        }
 
         if (item.Type == ActionType.Shose)
         {
diff --git a/Assets/Scripts/Interaction/PingClickHandler.cs b/Assets/Scripts/Interaction/PingClickHandler.cs
index 2f81191..164c688 100644
--- a/Assets/Scripts/Interaction/PingClickHandler.cs
+++ b/Assets/Scripts/Interaction/PingClickHandler.cs
@@ -16,6 +16,8 @@ public class PingClickHandler : MonoBehaviour
         if (_modelRenderer == null) _modelRenderer = GetComponentInChildren<MeshRenderer>();
         foreach (var r in GetComponentsInChildren<Renderer>(true)) r.enabled = false;
         if (GetComponent<Collider>() == null) gameObject.AddComponent<SphereCollider>().radius = 0.5f;
+        var col = GetComponent<Collider>();
+        if (col != null) col.enabled = true;
         CreateOutlineMesh();
         _modelShown = false;
         _isBlinking = true;
@@ -163,7 +165,16 @@ public class PingClickHandler : MonoBehaviour
         StopAllCoroutines();
         StartCoroutine(BlinkOutline());
     }
-    public void UndoShow() { HideSelf(); }
+    public void UndoShow()
+    {
+        _modelShown = false;
+        _isBlinking = false;
+        StopAllCoroutines();
+        if (chanraoObject != null) chanraoObject.SetActive(false);
+        foreach (var r in GetComponentsInChildren<Renderer>(true)) r.enabled = false;
+        var col = GetComponent<Collider>(); if (col != null) col.enabled = false;
+        gameObject.SetActive(false);
+    }
 
     private void HideSelf()
     {
@@ -183,6 +194,8 @@ public class PingClickHandler : MonoBehaviour
     public void ResetState()
     {
         _modelShown = false;
+        var col = GetComponent<Collider>();
+        if (col != null) col.enabled = true;
         _isBlinking = true;
         if (_modelRenderer != null) _modelRenderer.enabled = false;
         // 隐藏自身模型
diff --git a/Assets/Scripts/UI/PageController.cs b/Assets/Scripts/UI/PageController.cs
index 0bb117f..e99b343 100644
--- a/Assets/Scripts/UI/PageController.cs
+++ b/Assets/Scripts/UI/PageController.cs
@@ -432,7 +432,6 @@ public class PageController : MonoBehaviour
                 }
                 h.nextObject = chanraotuibu;
             }
-            shose.SetActive(false);
             shose.SetActive(true);
             Debug.Log("PageController: 开场动画结束，Shose 已立刻激活");
         }