diff --git a/build.gradle.kts b/build.gradle.kts
index d91f6eb..a5c2034 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,13 +1,13 @@
 plugins {
-    val kotlinVersion = "1.6.10"
+    val kotlinVersion = "1.7.0"
     kotlin("jvm") version kotlinVersion
     kotlin("plugin.serialization") version kotlinVersion
 
-    id("net.mamoe.mirai-console") version "2.11.1"
+    id("net.mamoe.mirai-console") version "2.12.0"
 }
 
 group = "top.jie65535"
-version = "0.1.0"
+version = "0.1.1"
 
 repositories {
     maven("https://maven.aliyun.com/repository/public") // 阿里云国内代理仓库
diff --git a/src/main/kotlin/PluginCommand.kt b/src/main/kotlin/PluginCommand.kt
new file mode 100644
index 0000000..f97fe33
--- /dev/null
+++ b/src/main/kotlin/PluginCommand.kt
@@ -0,0 +1,30 @@
+package top.jie65535.j24
+
+import net.mamoe.mirai.console.command.CommandSender
+import net.mamoe.mirai.console.command.CompositeCommand
+import net.mamoe.mirai.console.command.getGroupOrNull
+import net.mamoe.mirai.contact.Group
+
+object PluginCommand : CompositeCommand(
+    PluginMain, "j24"
+) {
+    @SubCommand
+    suspend fun CommandSender.enable(group: Group? = getGroupOrNull()) {
+        if (group == null) {
+            sendMessage("必须指定群")
+            return
+        }
+        PluginConfig.enabledGroups.add(group.id)
+        sendMessage("OK")
+    }
+
+    @SubCommand
+    suspend fun CommandSender.disable(group: Group? = getGroupOrNull()) {
+        if (group == null) {
+            sendMessage("必须指定群")
+            return
+        }
+        PluginConfig.enabledGroups.remove(group.id)
+        sendMessage("OK")
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/PluginConfig.kt b/src/main/kotlin/PluginConfig.kt
new file mode 100644
index 0000000..4c2033a
--- /dev/null
+++ b/src/main/kotlin/PluginConfig.kt
@@ -0,0 +1,8 @@
+package top.jie65535.j24
+
+import net.mamoe.mirai.console.data.AutoSavePluginConfig
+import net.mamoe.mirai.console.data.value
+
+object PluginConfig : AutoSavePluginConfig("config") {
+    val enabledGroups: MutableSet<Long> by value()
+}
\ No newline at end of file
diff --git a/src/main/kotlin/PluginMain.kt b/src/main/kotlin/PluginMain.kt
index dc19093..af22c24 100644
--- a/src/main/kotlin/PluginMain.kt
+++ b/src/main/kotlin/PluginMain.kt
@@ -1,16 +1,17 @@
 package top.jie65535.j24
 
+import net.mamoe.mirai.console.command.CommandManager.INSTANCE.register
 import net.mamoe.mirai.console.plugin.jvm.JvmPluginDescription
 import net.mamoe.mirai.console.plugin.jvm.KotlinPlugin
 import net.mamoe.mirai.event.GlobalEventChannel
-import net.mamoe.mirai.event.subscribeMessages
+import net.mamoe.mirai.event.subscribeGroupMessages
 import net.mamoe.mirai.utils.info
 
 object PluginMain : KotlinPlugin(
     JvmPluginDescription(
         id = "top.jie65535.j24",
         name = "J 24点游戏",
-        version = "0.1.0"
+        version = "0.1.1"
     ) {
         author("jie65535")
         info("24点游戏")
@@ -20,15 +21,19 @@ object PluginMain : KotlinPlugin(
 
     override fun onEnable() {
         logger.info { "Plugin loaded" }
+        PluginCommand.register()
+        PluginConfig.reload()
+
         val eventChannel = GlobalEventChannel.parentScope(this)
-        eventChannel.subscribeMessages {
-            startsWith("24点") quoteReply {
+        eventChannel.subscribeGroupMessages {
+            startsWith("24点") and content { PluginConfig.enabledGroups.contains(this.group.id) } quoteReply {
                 val game = Point24()
                 games[this.sender.id] = game
                 "你抽到了 [${game.points[0]}] [${game.points[1]}] [${game.points[2]}] [${game.points[3]}]\n" +
                     "请用以上四组数字组合成结果为24的算式，以“答”开头验证"
             }
-            startsWith("答") quoteReply {
+
+            startsWith("答") and content { PluginConfig.enabledGroups.contains(this.group.id) } quoteReply {
                 val game = games[sender.id]
                 if (game == null) {
                     "你还没有抽数字哦，说“24点”来开始游戏吧"
@@ -42,6 +47,7 @@ object PluginMain : KotlinPlugin(
                             "答错了，计算结果为 $result"
                         }
                     } catch (e: Throwable) {
+//                        logger.error(e)
                         "错误：${e.message}"
                     }
                 }
diff --git a/src/main/kotlin/Point24.kt b/src/main/kotlin/Point24.kt
index 669fe9d..40837e8 100644
--- a/src/main/kotlin/Point24.kt
+++ b/src/main/kotlin/Point24.kt
@@ -25,7 +25,12 @@ class Point24 {
                     return (args[0].toInt() and args[1].toInt()).toDouble()
                 }
             },
-            object : Operator("|", 2, true, Operator.PRECEDENCE_ADDITION - 3) {
+            object : Operator("^", 2, true, Operator.PRECEDENCE_ADDITION - 3) {
+                override fun apply(vararg args: Double): Double {
+                    return (args[0].toInt() xor args[1].toInt()).toDouble()
+                }
+            },
+            object : Operator("|", 2, true, Operator.PRECEDENCE_ADDITION - 4) {
                 override fun apply(vararg args: Double): Double {
                     return (args[0].toInt() or args[1].toInt()).toDouble()
                 }