diff --git a/build.gradle b/build.gradle
index 0b4da38d2..65ffa4912 100644
--- a/build.gradle
+++ b/build.gradle
@@ -136,6 +136,9 @@ dependencies {
     // Cloth Config相关
     implementation "me.shedaniel.cloth:cloth-config-neoforge:15.0.140"
 
+//    implementation "curse.maven:cupboard-326652:6078150"
+//    implementation "curse.maven:connectivity-470193:6229173"
+
 //    // 测试用mod
 //    implementation fg.deobf("curse.maven:oculus-581495:6020952")
 //    implementation fg.deobf("curse.maven:embeddium-908741:5681725")
diff --git a/src/main/java/com/atsuishio/superbwarfare/capability/player/PlayerVariable.java b/src/main/java/com/atsuishio/superbwarfare/capability/player/PlayerVariable.java
index 5bdbb8d07..d34dafb32 100644
--- a/src/main/java/com/atsuishio/superbwarfare/capability/player/PlayerVariable.java
+++ b/src/main/java/com/atsuishio/superbwarfare/capability/player/PlayerVariable.java
@@ -37,7 +37,7 @@ public class PlayerVariable implements INBTSerializable<CompoundTag> {
         if (old != null && old.equals(newVariable)) return;
 
         if (entity instanceof ServerPlayer serverPlayer) {
-            PacketDistributor.sendToPlayer(serverPlayer, new PlayerVariablesSyncMessage(entity.getId(), newVariable.writeToNBT()));
+            PacketDistributor.sendToPlayer(serverPlayer, new PlayerVariablesSyncMessage(entity.getId(), compareAndUpdate()));
         }
     }
 
@@ -45,7 +45,7 @@ public class PlayerVariable implements INBTSerializable<CompoundTag> {
     public static void onPlayerLoggedIn(PlayerEvent.PlayerLoggedInEvent event) {
         if (!(event.getEntity() instanceof ServerPlayer player)) return;
 
-        PacketDistributor.sendToPlayer(player, new PlayerVariablesSyncMessage(player.getId(), player.getData(ModAttachments.PLAYER_VARIABLE).writeToNBT()));
+        PacketDistributor.sendToPlayer(player, new PlayerVariablesSyncMessage(player.getId(), player.getData(ModAttachments.PLAYER_VARIABLE).compareAndUpdate()));
     }
 
     public PlayerVariable watch() {
@@ -53,6 +53,29 @@ public class PlayerVariable implements INBTSerializable<CompoundTag> {
         return this;
     }
 
+    public Map<Byte, Integer> compareAndUpdate() {
+        var map = new HashMap<Byte, Integer>();
+        var old = this.old == null ? new PlayerVariable() : this.old;
+
+        for (var type : Ammo.values()) {
+            var oldCount = old.ammo.getOrDefault(type, 0);
+            var newCount = type.get(this);
+
+            if (oldCount != newCount) {
+                map.put((byte) type.ordinal(), newCount);
+            }
+        }
+
+        if (old.tacticalSprint != this.tacticalSprint) {
+            map.put((byte) -1, this.tacticalSprint ? 1 : 0);
+        }
+        if (old.edit != this.edit) {
+            map.put((byte) -2, this.edit ? 1 : 0);
+        }
+
+        return map;
+    }
+
     /**
      * 编辑并同步玩家变量
      */
diff --git a/src/main/java/com/atsuishio/superbwarfare/network/message/receive/PlayerVariablesSyncMessage.java b/src/main/java/com/atsuishio/superbwarfare/network/message/receive/PlayerVariablesSyncMessage.java
index 6fd924fa4..de3457290 100644
--- a/src/main/java/com/atsuishio/superbwarfare/network/message/receive/PlayerVariablesSyncMessage.java
+++ b/src/main/java/com/atsuishio/superbwarfare/network/message/receive/PlayerVariablesSyncMessage.java
@@ -1,37 +1,61 @@
 package com.atsuishio.superbwarfare.network.message.receive;
 
 import com.atsuishio.superbwarfare.Mod;
-import com.atsuishio.superbwarfare.capability.player.PlayerVariable;
 import com.atsuishio.superbwarfare.init.ModAttachments;
+import com.atsuishio.superbwarfare.tools.Ammo;
 import io.netty.buffer.ByteBuf;
 import net.minecraft.client.Minecraft;
-import net.minecraft.nbt.CompoundTag;
 import net.minecraft.network.codec.ByteBufCodecs;
 import net.minecraft.network.codec.StreamCodec;
 import net.minecraft.network.protocol.common.custom.CustomPacketPayload;
 import net.neoforged.neoforge.network.handling.IPayloadContext;
 import org.jetbrains.annotations.NotNull;
 
-public record PlayerVariablesSyncMessage(int target, CompoundTag data) implements CustomPacketPayload {
+import java.util.HashMap;
+import java.util.Map;
+
+public record PlayerVariablesSyncMessage(int target, Map<Byte, Integer> data) implements CustomPacketPayload {
     public static final CustomPacketPayload.Type<PlayerVariablesSyncMessage> TYPE = new CustomPacketPayload.Type<>(Mod.loc("player_variable_sync"));
 
     public static final StreamCodec<ByteBuf, PlayerVariablesSyncMessage> STREAM_CODEC = StreamCodec.composite(
             ByteBufCodecs.INT,
             PlayerVariablesSyncMessage::target,
-            ByteBufCodecs.COMPOUND_TAG,
+            ByteBufCodecs.map(
+                    HashMap::new,
+                    ByteBufCodecs.BYTE,
+                    ByteBufCodecs.VAR_INT,
+                    256
+            ),
             PlayerVariablesSyncMessage::data,
             PlayerVariablesSyncMessage::new
     );
 
 
     public static void handler(final PlayerVariablesSyncMessage message, final IPayloadContext context) {
-        var data = new PlayerVariable().readFromNBT(message.data());
-
         if (Minecraft.getInstance().player == null) return;
+
         var entity = Minecraft.getInstance().player.level().getEntity(message.target());
         if (entity == null) return;
 
-        entity.setData(ModAttachments.PLAYER_VARIABLE, data);
+        var variable = entity.getData(ModAttachments.PLAYER_VARIABLE);
+        var map = message.data();
+
+        for (var entry : map.entrySet()) {
+            var type = entry.getKey();
+            switch (type) {
+                case -1 -> variable.tacticalSprint = entry.getValue() == 1;
+                case -2 -> variable.edit = entry.getValue() == 1;
+                default -> {
+                    var ammoTypes = Ammo.values();
+                    if (type < ammoTypes.length) {
+                        var ammo = ammoTypes[type];
+                        variable.ammo.put(ammo, entry.getValue());
+                    }
+                }
+            }
+        }
+
+        entity.setData(ModAttachments.PLAYER_VARIABLE, variable);
     }
 
     @Override