diff --git a/Assets/Materials/PlayerMaterial.physicMaterial b/Assets/Materials/PlayerMaterial.physicMaterial
index 519c956..7e88d8b 100644
--- a/Assets/Materials/PlayerMaterial.physicMaterial
+++ b/Assets/Materials/PlayerMaterial.physicMaterial
@@ -7,8 +7,8 @@ PhysicMaterial:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_Name: PlayerMaterial
-  dynamicFriction: 0.6
-  staticFriction: 0.6
+  dynamicFriction: 0
+  staticFriction: 0
   bounciness: 0
-  frictionCombine: 1
+  frictionCombine: 0
   bounceCombine: 0
diff --git a/Assets/Prefabs/Platform.prefab b/Assets/Prefabs/Platform.prefab
index 011a3d1..d14b736 100644
--- a/Assets/Prefabs/Platform.prefab
+++ b/Assets/Prefabs/Platform.prefab
@@ -93,7 +93,7 @@ BoxCollider:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 8768991388683709947}
-  m_Material: {fileID: 0}
+  m_Material: {fileID: 13400000, guid: 055b414bc685d41409a41f4ea2d64231, type: 2}
   m_IsTrigger: 0
   m_Enabled: 1
   serializedVersion: 2
@@ -128,3 +128,4 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   type: 0
+  speed: 5
diff --git a/Assets/Prefabs/Platform_Blue.prefab b/Assets/Prefabs/Platform_Blue.prefab
index 13d3118..c90309d 100644
--- a/Assets/Prefabs/Platform_Blue.prefab
+++ b/Assets/Prefabs/Platform_Blue.prefab
@@ -93,7 +93,7 @@ BoxCollider:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 8768991388683709947}
-  m_Material: {fileID: 0}
+  m_Material: {fileID: 13400000, guid: 055b414bc685d41409a41f4ea2d64231, type: 2}
   m_IsTrigger: 0
   m_Enabled: 1
   serializedVersion: 2
diff --git a/Assets/Prefabs/Platform_Green.prefab b/Assets/Prefabs/Platform_Green.prefab
index 227ba93..9876860 100644
--- a/Assets/Prefabs/Platform_Green.prefab
+++ b/Assets/Prefabs/Platform_Green.prefab
@@ -94,7 +94,7 @@ BoxCollider:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 8768991388683709947}
-  m_Material: {fileID: 0}
+  m_Material: {fileID: 13400000, guid: 055b414bc685d41409a41f4ea2d64231, type: 2}
   m_IsTrigger: 0
   m_Enabled: 1
   serializedVersion: 2
@@ -129,6 +129,7 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   type: 1
+  speed: 5
 --- !u!1 &8985668614484660023
 GameObject:
   m_ObjectHideFlags: 0
diff --git a/Assets/Prefabs/Platform_yellow.prefab b/Assets/Prefabs/Platform_yellow.prefab
index f6c83b2..793b338 100644
--- a/Assets/Prefabs/Platform_yellow.prefab
+++ b/Assets/Prefabs/Platform_yellow.prefab
@@ -93,7 +93,7 @@ BoxCollider:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 8768991388683709947}
-  m_Material: {fileID: 0}
+  m_Material: {fileID: 13400000, guid: 055b414bc685d41409a41f4ea2d64231, type: 2}
   m_IsTrigger: 0
   m_Enabled: 1
   serializedVersion: 2
@@ -128,3 +128,4 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   type: 4
+  speed: 500
diff --git a/Assets/Scenes/Haitem.unity b/Assets/Scenes/Haitem.unity
index 04b1a04..46ace55 100644
--- a/Assets/Scenes/Haitem.unity
+++ b/Assets/Scenes/Haitem.unity
@@ -136,7 +136,7 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 3244356567786994345, guid: ec622cf6f0988bc42a99ba84304c15a9, type: 3}
       propertyPath: m_RootOrder
-      value: 2
+      value: 4
       objectReference: {fileID: 0}
     - target: {fileID: 3244356567786994345, guid: ec622cf6f0988bc42a99ba84304c15a9, type: 3}
       propertyPath: m_LocalPosition.x
@@ -340,7 +340,7 @@ PrefabInstance:
     m_Modifications:
     - target: {fileID: 8768991388683709944, guid: 99c4e582c7358f346ab00dae4ae956f9, type: 3}
       propertyPath: m_RootOrder
-      value: 1
+      value: 2
       objectReference: {fileID: 0}
     - target: {fileID: 8768991388683709944, guid: 99c4e582c7358f346ab00dae4ae956f9, type: 3}
       propertyPath: m_LocalPosition.x
@@ -397,7 +397,7 @@ PrefabInstance:
     m_Modifications:
     - target: {fileID: 8768991388683709944, guid: 97d4c453fb5affa448968cb5ce9ca2f4, type: 3}
       propertyPath: m_RootOrder
-      value: 3
+      value: 5
       objectReference: {fileID: 0}
     - target: {fileID: 8768991388683709944, guid: 97d4c453fb5affa448968cb5ce9ca2f4, type: 3}
       propertyPath: m_LocalPosition.x
@@ -452,13 +452,9 @@ PrefabInstance:
   m_Modification:
     m_TransformParent: {fileID: 0}
     m_Modifications:
-    - target: {fileID: 7821003709828495146, guid: 1e3f34788e0cb3f49a0bef285d5b059a, type: 3}
-      propertyPath: speed
-      value: 500
-      objectReference: {fileID: 0}
     - target: {fileID: 8768991388683709944, guid: 1e3f34788e0cb3f49a0bef285d5b059a, type: 3}
       propertyPath: m_RootOrder
-      value: 1
+      value: 3
       objectReference: {fileID: 0}
     - target: {fileID: 8768991388683709944, guid: 1e3f34788e0cb3f49a0bef285d5b059a, type: 3}
       propertyPath: m_LocalPosition.x