diff --git a/CAPI/cpp/API/src/Communication.cpp b/CAPI/cpp/API/src/Communication.cpp
index 6bcf8d8..f808e22 100644
--- a/CAPI/cpp/API/src/Communication.cpp
+++ b/CAPI/cpp/API/src/Communication.cpp
@@ -249,10 +249,13 @@ void Communication::AddPlayer(int64_t playerID, THUAI6::PlayerType playerType, T
         grpc::ClientContext context;
         auto MessageReader = THUAI6Stub->AddPlayer(&context, playerMsg);
 
-        while (MessageReader->Read(&message2Client))
+        protobuf::MessageToClient buffer2Client;
+
+        while (MessageReader->Read(&buffer2Client))
         {
             {
                 std::lock_guard<std::mutex> lock(mtxMessage);
+                message2Client = std::move(buffer2Client);
                 haveNewMessage = true;
             }
             cvMessage.notify_one();
diff --git a/dependency/shell/run.sh b/dependency/shell/run.sh
index 70a1286..5b44566 100644
--- a/dependency/shell/run.sh
+++ b/dependency/shell/run.sh
@@ -3,7 +3,7 @@
 python_dir=/usr/local/PlayerCode/CAPI/python/PyAPI
 playback_dir=/usr/local/playback
 
-nice -10 ./Server --port 8888 --studentCount 4 --trickerCount 1 --gameTimeInSecond 600 --url $URL --token $TOKEN --fileName $playback_dir/video > $playback_dir/server.log &
+nice -10 ./Server --port 8888 --studentCount 4 --trickerCount 1 --gameTimeInSecond 600 --url $URL --token $TOKEN --fileName $playback_dir/video --startLockFile $playback_dir/start.lock > $playback_dir/server.log &
 server_pid=$!
 sleep 5
 for k in {1..2}
@@ -39,12 +39,20 @@ do
     popd
 done
 
-ps -p $server_pid
-while [ $? -eq 0 ]
-do
-    sleep 1
-    ps -p $server_pid
-done
+sleep 10
 
-touch $playback_dir/finish.lock
-echo "Finish"
+if [ -f $playback_dir/start.lock ]; then
+    ps -p $server_pid
+    while [ $? -eq 0 ]
+    do
+        sleep 1
+        ps -p $server_pid
+    done
+    touch $playback_dir/finish.lock
+    echo "Finish"
+else
+    echo "Failed to start game."
+    touch temp.lock
+    mv -f temp.lock $playback_dir/video.thuaipb
+    kill -9 $server_pid
+fi
diff --git a/logic/Server/ArgumentOption.cs b/logic/Server/ArgumentOption.cs
index 2dddf7d..fa680b1 100644
--- a/logic/Server/ArgumentOption.cs
+++ b/logic/Server/ArgumentOption.cs
@@ -71,5 +71,8 @@ namespace Server
 
         [Option("resultFileName", Required = false, HelpText = "Result file name, saved as .json")]
         public string ResultFileName { get; set; } = DefaultArgumentOptions.FileName;
+
+        [Option("startLockFile", Required = false, HelpText = "Whether to create a file that identifies whether the game has started")]
+        public string StartLockFile { get; set; } = DefaultArgumentOptions.FileName;
     }
 }
\ No newline at end of file
diff --git a/logic/Server/GameServer.cs b/logic/Server/GameServer.cs
index b81bfe7..080ae7b 100644
--- a/logic/Server/GameServer.cs
+++ b/logic/Server/GameServer.cs
@@ -45,6 +45,7 @@ namespace Server
                 if (id == GameObj.invalidID) return;     //如果有未初始化的玩家，不开始游戏
             }
             Console.WriteLine("Game starts!");
+            CreateStartFile();
             game.StartGame((int)options.GameTimeInSecond * 1000);
             Thread.Sleep(1);
             new Thread(() =>
@@ -74,6 +75,16 @@ namespace Server
             })
             { IsBackground = true }.Start();
         }
+
+        public void CreateStartFile()
+        {
+            if (options.StartLockFile != DefaultArgumentOptions.FileName)
+            {
+                using var _ = File.Create(options.StartLockFile);
+                Console.WriteLine("Successfully Created StartLockFile!");
+            }
+        }
+
         public void WaitForEnd()
         {
             this.endGameSem.Wait();