diff --git a/docs/QandA.md b/docs/QandA.md
index 27cc151..e66d722 100644
--- a/docs/QandA.md
+++ b/docs/QandA.md
@@ -61,7 +61,9 @@ A：
 2. 不要点重新生成，要点生成
 3. 开启下图选项
 ![CompileFaster](https://raw.githubusercontent.com/shangfengh/THUAI6/new/resource/CompileFaster.png)
-   
+
+Q:这是什么错误啊
+![vector](https://raw.githubusercontent.com/shangfengh/THUAI6/new/resource/vector.png)
 
 ## Python 
 
diff --git a/logic/GameClass/GameObj/Map/Map.cs b/logic/GameClass/GameObj/Map/Map.cs
index 953ddb3..3cfbf49 100644
--- a/logic/GameClass/GameObj/Map/Map.cs
+++ b/logic/GameClass/GameObj/Map/Map.cs
@@ -232,14 +232,14 @@ namespace GameClass.GameObj
                         break;
                     }
                 }
+                if (ToDel != null)
+                    GameObjDict[gameObj.Type].Remove(ToDel);
             }
             finally
             {
                 GameObjLockDict[gameObj.Type].ExitWriteLock();
             }
-            if (ToDel == null) return false;
-            GameObjDict[gameObj.Type].Remove(ToDel);
-            return true;
+            return ToDel != null;
         }
         public bool RemoveJustFromMap(GameObj gameObj)
         {
diff --git a/logic/GameEngine/MoveEngine.cs b/logic/GameEngine/MoveEngine.cs
index 978f6c5..aa13c68 100644
--- a/logic/GameEngine/MoveEngine.cs
+++ b/logic/GameEngine/MoveEngine.cs
@@ -147,14 +147,16 @@ namespace GameEngine
                                             isDestroyed = true;
                                             return false;
                                         case AfterCollision.MoveMax:
-                                            MoveMax(obj, res);
+                                            if (threadNum == 0 || ((ICharacter)obj).ThreadNum == threadNum)
+                                                MoveMax(obj, res);
                                             moveVecLength = 0;
                                             res = new XY(direction, moveVecLength);
                                             break;
                                     }
                                 } while (flag);
 
-                                deltaLen += moveVecLength - Math.Sqrt(obj.MovingSetPos(res, GetPlaceType(obj.Position + res)));
+                                if (threadNum == 0 || ((ICharacter)obj).ThreadNum == threadNum)
+                                    deltaLen += moveVecLength - Math.Sqrt(obj.MovingSetPos(res, GetPlaceType(obj.Position + res)));
 
                                 return true;
                             },
@@ -172,7 +174,8 @@ namespace GameEngine
                                         res = new XY(direction, moveVecLength);
                                         if ((collisionObj = collisionChecker.CheckCollisionWhenMoving(obj, res)) == null)
                                         {
-                                            obj.MovingSetPos(res, GetPlaceType(obj.Position + res));
+                                            if (threadNum == 0 || ((ICharacter)obj).ThreadNum == threadNum)
+                                                obj.MovingSetPos(res, GetPlaceType(obj.Position + res));
                                         }
                                         else
                                         {
@@ -186,7 +189,8 @@ namespace GameEngine
                                                     isDestroyed = true;
                                                     break;
                                                 case AfterCollision.MoveMax:
-                                                    MoveMax(obj, res);
+                                                    if (threadNum == 0 || ((ICharacter)obj).ThreadNum == threadNum)
+                                                        MoveMax(obj, res);
                                                     moveVecLength = 0;
                                                     res = new XY(direction, moveVecLength);
                                                     break;
diff --git a/logic/Server/CopyInfo.cs b/logic/Server/CopyInfo.cs
index 1e12971..d6a1423 100644
--- a/logic/Server/CopyInfo.cs
+++ b/logic/Server/CopyInfo.cs
@@ -272,7 +272,7 @@ namespace Server
                     Y = chest.Position.y
                 }
             };
-            int progress = (chest.WhoOpen!=null) ? ((time - chest.OpenStartTime) * chest.WhoOpen.SpeedOfOpenChest) : 0;
+            int progress = (chest.WhoOpen != null) ? ((time - chest.OpenStartTime) * chest.WhoOpen.SpeedOfOpenChest) : 0;
             msg.ChestMessage.Progress = (progress > GameData.degreeOfOpenedChest) ? GameData.degreeOfOpenedChest : progress;
             return msg;
         }
diff --git a/logic/cmd/gameServerAndClient.cmd b/logic/cmd/gameServerAndClient.cmd
index 71f90c7..125b391 100644
--- a/logic/cmd/gameServerAndClient.cmd
+++ b/logic/cmd/gameServerAndClient.cmd
@@ -1,6 +1,6 @@
 @echo off
 
-start cmd /k ..\Server\bin\Debug\net6.0\Server.exe --ip  0.0.0.0  --port 8888 --studentCount 4 --trickerCount 1 --gameTimeInSecond 600 --fileName test 
+start cmd /k ..\Server\bin\Debug\net6.0\Server.exe --ip  0.0.0.0  --port 8888 --studentCount 0 --trickerCount 1 --gameTimeInSecond 600 --fileName test 
 
 ping -n 2 127.0.0.1 > NUL
 
diff --git a/resource/vector.png b/resource/vector.png
new file mode 100644
index 0000000..72d1987
Binary files /dev/null and b/resource/vector.png differ