diff --git a/Assets/Scenes/SubWay.unity b/Assets/Scenes/SubWay.unity
index 31c0fdbda..016c7fb9a 100644
--- a/Assets/Scenes/SubWay.unity
+++ b/Assets/Scenes/SubWay.unity
@@ -2565,143 +2565,6 @@ Transform:
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-  m_Component:
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-  - component: {fileID: 1335961265}
-  - component: {fileID: 1335961264}
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-  m_Icon: {fileID: 0}
-  m_NavMeshLayer: 0
-  m_StaticEditorFlags: 0
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-  far clip plane: 1000
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-  orthographic: 1
-  orthographic size: 4.88
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-  m_PrefabAsset: {fileID: 0}
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@@ -4572,7 +4435,6 @@ MonoBehaviour:
 SceneRoots:
   m_ObjectHideFlags: 0
   m_Roots:
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diff --git a/Assets/Scripts/Clue/ClueBaordNew.cs b/Assets/Scripts/Clue/ClueBaordNew.cs
index fe42d71bc..a4700dc5d 100644
--- a/Assets/Scripts/Clue/ClueBaordNew.cs
+++ b/Assets/Scripts/Clue/ClueBaordNew.cs
@@ -140,14 +140,24 @@ public void NodeInit(string nodeID,bool isactive)
         [YarnCommand("ClearAllNode")]
     public void ClearAllNode()
     {
-        foreach(Connection line in gm.localConnections)
+        for (int i = gm.localConnections.Count - 1; i >= 0; i--)
         {
-            line.Remove();
+            gm.localConnections[i].Remove();
         }
-        foreach(GameObject node in nodeLists)
+        
+        for (int i = nodeLists.Count - 1; i >= 0; i--)
         {
-            node.SetActive(false);
+            nodeLists[i].SetActive(false);
         }
+        
+        // foreach(Connection line in gm.localConnections)
+        // {
+        //     line.Remove();
+        // }
+        // foreach(GameObject node in nodeLists)
+        // {
+        //     node.SetActive(false);
+        // }
     }
     [YarnCommand("CreateConnection")]
         public void CreateConnection(string StartNode,string EndNode)