diff --git a/src/main/java/vip/fubuki/playersync/PlayerSync.java b/src/main/java/vip/fubuki/playersync/PlayerSync.java
index b1f425e..2512cb5 100644
--- a/src/main/java/vip/fubuki/playersync/PlayerSync.java
+++ b/src/main/java/vip/fubuki/playersync/PlayerSync.java
@@ -31,8 +31,9 @@ public class PlayerSync
         modEventBus.addListener(this::commonSetup);
         MinecraftForge.EVENT_BUS.register(this);
         MinecraftForge.EVENT_BUS.register(new VanillaSync());
-        MinecraftForge.EVENT_BUS.register(new ChatSync());
-        
+        if(JdbcConfig.SYNC_CHAT.get()){
+            MinecraftForge.EVENT_BUS.register(new ChatSync());
+        }
     }
 
     private void commonSetup(final FMLCommonSetupEvent event) {}
diff --git a/src/main/java/vip/fubuki/playersync/config/JdbcConfig.java b/src/main/java/vip/fubuki/playersync/config/JdbcConfig.java
index c68382f..61800b3 100644
--- a/src/main/java/vip/fubuki/playersync/config/JdbcConfig.java
+++ b/src/main/java/vip/fubuki/playersync/config/JdbcConfig.java
@@ -17,6 +17,7 @@ public class JdbcConfig {
     public static ForgeConfigSpec.ConfigValue<String> PASSWORD;
     public static ForgeConfigSpec.ConfigValue<List<String>> SYNC_WORLD;
     public static ForgeConfigSpec.BooleanValue USE_SSL;
+    public static ForgeConfigSpec.BooleanValue SYNC_CHAT;
 
 
     static {
@@ -29,6 +30,7 @@ public class JdbcConfig {
         USERNAME = COMMON_BUILDER.comment("username").define("user_name", "root");
         PASSWORD = COMMON_BUILDER.comment("password").define("password", "password");
         SYNC_WORLD = COMMON_BUILDER.comment("The worlds that will be synchronized.If running in server it is supposed to have only one").define("sync_world", new ArrayList<String>());
+        SYNC_CHAT= COMMON_BUILDER.comment("Whether synchronize chat").define("sync_chat", true);
         COMMON_BUILDER.pop();
         COMMON_CONFIG = COMMON_BUILDER.build();
     }
diff --git a/src/main/java/vip/fubuki/playersync/sync/ChatSync.java b/src/main/java/vip/fubuki/playersync/sync/ChatSync.java
index 355ed41..46b75f7 100644
--- a/src/main/java/vip/fubuki/playersync/sync/ChatSync.java
+++ b/src/main/java/vip/fubuki/playersync/sync/ChatSync.java
@@ -10,23 +10,23 @@ import java.sql.SQLException;
 import java.util.Objects;
 
 public class ChatSync {
-    int tick = 0;
-    long current = System.currentTimeMillis();
+    static int tick = 0;
+    static long current = System.currentTimeMillis();
     @SubscribeEvent
-    public void onPlayerChat(net.minecraftforge.event.ServerChatEvent event) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException {
+    public static void onPlayerChat(net.minecraftforge.event.ServerChatEvent event) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException {
         ReadMessage(Objects.requireNonNull(event.getPlayer().getServer()).getPlayerList());
         JDBCsetUp.executeUpdate("INSERT INTO chat (player, message, timestamp) VALUES ('" + event.getUsername() + "', '" + event.getMessage() + "', '" + current + "')");
     }
 
     @SubscribeEvent
-    public void Tick(net.minecraftforge.event.TickEvent.ServerTickEvent event) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException {
+    public static void Tick(net.minecraftforge.event.TickEvent.ServerTickEvent event) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException {
         tick++;
         if(tick == 20) {
             ReadMessage(event.getServer().getPlayerList());
         }
     }
 
-    public void ReadMessage(PlayerList playerList) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException {
+    public static void ReadMessage(PlayerList playerList) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException {
         ResultSet resultSet= JDBCsetUp.executeQuery("SELECT * FROM chat WHERE timestamp > " + current);
         current = System.currentTimeMillis();
         tick = 0;
@@ -36,5 +36,6 @@ public class ChatSync {
             Component textComponents = Component.literal(player+": "+message);
             playerList.broadcastSystemMessage(textComponents, true);
         }
+        resultSet.close();
     }
 }
diff --git a/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java b/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java
index beb1577..53cf53d 100644
--- a/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java
+++ b/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java
@@ -108,7 +108,7 @@ public class VanillaSync {
         return ItemStack.of(compoundTag);
     }
     @SubscribeEvent
-    public void OnPlayerLogout(PlayerEvent.PlayerLoggedOutEvent event) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException, IOException {
+    public static void OnPlayerLogout(PlayerEvent.PlayerLoggedOutEvent event) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException, IOException {
         String player_uuid = event.getEntity().getUUID().toString();
         JDBCsetUp.executeUpdate("UPDATE player_data SET online=false WHERE uuid='"+player_uuid+"'");
         if(!event.getEntity().getTags().contains("player_synced")) return;
@@ -119,7 +119,7 @@ public class VanillaSync {
         event.getEntity().removeTag("player_synced");
     }
 
-    public void Store(Player player, boolean init,boolean isServer) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException, IOException {
+    public static void Store(Player player, boolean init,boolean isServer) throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException, IOException {
         String player_uuid = player.getUUID().toString();
         //Easy part
         int XP = player.totalExperience;
@@ -183,7 +183,7 @@ public class VanillaSync {
         }else JDBCsetUp.executeUpdate("UPDATE player_data SET inventory = '"+inventoryMap+"',armor='"+equipment+"' ,xp='"+XP+"',effects='"+effectMap+"',enderchest='"+ender_chest+"',score='"+score+"',food_level='"+food_level+"',health='"+health+"',advancements='"+json+"' WHERE uuid = '"+player_uuid+"'");
     }
 
-    private File[] ScanAdvancementsFile(String player_uuid, File gameDir) {
+    private static File[] ScanAdvancementsFile(String player_uuid, File gameDir) {
         File[] files = new File[JdbcConfig.SYNC_WORLD.get().size()];
         for (int i = 0; i < JdbcConfig.SYNC_WORLD.get().size(); i++) {
             File advanceFile=new File(gameDir, "saves/"+JdbcConfig.SYNC_WORLD.get().get(i)+"/advancements"+"/"+player_uuid+".json");