diff --git a/build.gradle.kts b/build.gradle.kts
index a5c2034..98831db 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -7,7 +7,7 @@ plugins {
 }
 
 group = "top.jie65535"
-version = "0.1.1"
+version = "0.1.2"
 
 repositories {
     maven("https://maven.aliyun.com/repository/public") // 阿里云国内代理仓库
diff --git a/src/main/kotlin/PluginMain.kt b/src/main/kotlin/PluginMain.kt
index cbed398..f12402c 100644
--- a/src/main/kotlin/PluginMain.kt
+++ b/src/main/kotlin/PluginMain.kt
@@ -4,14 +4,17 @@ 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.events.GroupMessageEvent
 import net.mamoe.mirai.event.subscribeGroupMessages
 import net.mamoe.mirai.utils.info
+import java.time.Duration
+import java.time.LocalDateTime
 
 object PluginMain : KotlinPlugin(
     JvmPluginDescription(
         id = "top.jie65535.j24",
         name = "J 24点游戏",
-        version = "0.1.1"
+        version = "0.1.2"
     ) {
         author("jie65535")
         info("24点游戏")
@@ -27,23 +30,26 @@ object PluginMain : KotlinPlugin(
         PluginConfig.reload()
 
         val eventChannel = GlobalEventChannel.parentScope(this)
-        eventChannel.subscribeGroupMessages {
-            startsWith("24点") and content { PluginConfig.enabledGroups.contains(this.group.id) } quoteReply {
-                val game = Point24()
-                games[this.sender.id] = game
-                "请用 [${game.points[0]}] [${game.points[1]}] [${game.points[2]}] [${game.points[3]}] 组成结果为24的算式，以'$prefix'开头验证"
+        eventChannel.filter { it is GroupMessageEvent && PluginConfig.enabledGroups.contains(it.group.id) }.subscribeGroupMessages {
+            startsWith("24点") reply {
+                var game = games[group.id]
+                if (game == null || game.time.plusMinutes(1) < LocalDateTime.now()) {
+                    game = Point24()
+                    games[group.id] = game
+                    "请用 $game 组成结果为24的算式，以'$prefix'开头验证"
+                } else Unit
             }
 
-            startsWith(prefix) 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"
-                } else {
+            startsWith(prefix) quoteReply {
+                val game = games[group.id]
+                if (game != null) {
                     try {
                         val result = game.evaluate(message.contentToString().removePrefix(prefix).trim())
                         if (result == 24.0) {
-                            games.remove(sender.id)
-                            "厉害，答对了！"
+                            val newGame = Point24()
+                            games[group.id] = newGame
+                            val duration = Duration.between(game.time, LocalDateTime.now())
+                            "答对了！ ${duration.toMinutes()}:${duration.toSecondsPart()}\n下一题：$newGame"
                         } else {
                             "答错了，计算结果为 $result"
                         }
@@ -51,7 +57,7 @@ object PluginMain : KotlinPlugin(
 //                        logger.error(e)
                         "错误：${e.message}"
                     }
-                }
+                } else Unit
             }
         }
     }
diff --git a/src/main/kotlin/Point24.kt b/src/main/kotlin/Point24.kt
index 40837e8..729552b 100644
--- a/src/main/kotlin/Point24.kt
+++ b/src/main/kotlin/Point24.kt
@@ -5,6 +5,7 @@ import net.objecthunter.exp4j.operator.Operator
 import net.objecthunter.exp4j.shuntingyard.ShuntingYard
 import net.objecthunter.exp4j.tokenizer.NumberToken
 import net.objecthunter.exp4j.tokenizer.Token
+import java.time.LocalDateTime
 import kotlin.random.Random
 
 class Point24 {
@@ -35,6 +36,15 @@ class Point24 {
                     return (args[0].toInt() or args[1].toInt()).toDouble()
                 }
             },
+            // 阶乘禁用，因为这会让游戏从24点变成4点
+//            object : Operator("!", 1, true, Operator.PRECEDENCE_POWER) {
+//                override fun apply(vararg args: Double): Double {
+//                    var sum = 1
+//                    for (i in 2..args[0].toInt())
+//                        sum *= i
+//                    return sum.toDouble()
+//                }
+//            },
         )
         private val myOperatorMap: Map<String, Operator>
         init {
@@ -46,10 +56,7 @@ class Point24 {
     }
 
     var points = genPoints()
-
-    fun regenPoints() {
-        points = genPoints()
-    }
+    var time: LocalDateTime = LocalDateTime.now()
 
     private fun genPoints() = arrayOf(
         Random.nextInt(1, 14),
@@ -58,8 +65,21 @@ class Point24 {
         Random.nextInt(1, 14)
     )
 
+    override fun toString() = "[${points[0]}] [${points[1]}] [${points[2]}] [${points[3]}]"
+
     fun evaluate(expression: String): Double {
-        val expr = expression.replace('（', '(').replace('）', ')')
+        val expr = expression
+            .replace('（', '(')
+            .replace('）', ')')
+            .replace('x', '*')
+            .replace('×', '*')
+            .replace('÷', '/')
+            .replace('－', '-')
+            .replace('＋', '+')
+            .replace('！', '!')
+            .replace('＜', '<')
+            .replace('＞', '>')
+
 
         if (expr.contains('%'))
             throw IllegalArgumentException("禁止使用%运算符")
@@ -72,6 +92,7 @@ class Point24 {
             false
         )
 
+        var usedAll = true
         val nums = points.toMutableList()
         for (token in tokens) {
             if (token.type == Token.TOKEN_NUMBER.toInt()) {
@@ -84,18 +105,24 @@ class Point24 {
                 if (i < nums.size)
                     nums.removeAt(i)
                 else
-                    throw IllegalArgumentException("不能使用未得到的数值")
+                    usedAll = false
+//                throw IllegalArgumentException("不能使用未得到的数值")
             } else if (token.type == Token.TOKEN_FUNCTION.toInt()) {
                 throw IllegalArgumentException("禁止使用函数哦")
             }
         }
         if (nums.isNotEmpty())
-            throw IllegalArgumentException("必须使用所有数值")
+            usedAll = false
+//            throw IllegalArgumentException("必须使用所有数值")
 
-        return ExpressionBuilder(expr)
+        val result = ExpressionBuilder(expr)
             .operator(myOperators)
             .implicitMultiplication(false)
             .build()
             .evaluate()
+        if (usedAll)
+            return result
+        else
+            throw IllegalArgumentException("结果为$result，请使用系统生成的数值！")
     }
 }
\ No newline at end of file