diff --git a/backend/codegen/build.gradle.kts b/backend/codegen/build.gradle.kts
index 78077df4a..3b254c046 100644
--- a/backend/codegen/build.gradle.kts
+++ b/backend/codegen/build.gradle.kts
@@ -22,4 +22,5 @@ kotlin {
 
 dependencies {
     api(kotlin("stdlib-jdk8"))
+    implementation(kotlin("reflect"))
 }
\ No newline at end of file
diff --git a/backend/codegen/src/main/kotlin/net/mamoe/mirai/console/codegen/Codegen.kt b/backend/codegen/src/main/kotlin/net/mamoe/mirai/console/codegen/Codegen.kt
index 5292c566e..9e2cf69a7 100644
--- a/backend/codegen/src/main/kotlin/net/mamoe/mirai/console/codegen/Codegen.kt
+++ b/backend/codegen/src/main/kotlin/net/mamoe/mirai/console/codegen/Codegen.kt
@@ -56,13 +56,14 @@ class CodegenScope : MutableList<Replacer> by mutableListOf() {
             content.replace(Regex("""//// region $regionName CODEGEN ////([\s\S]*?)( *)//// endregion $regionName CODEGEN ////""")) { result ->
                 val indent = result.groups[2]!!.value
                 val indentedCode = CodegenScope()
-                    .apply { (this@invoke as Codegen).invoke(*ktTypes.toTypedArray()) }
-                    .applyTo("")
-                    .mapLine { "${indent}$it" }
+                    .apply { (this@invoke as Codegen).invoke(*ktTypes.toTypedArray()) } // add codegen task
+                    .applyTo("") // perform codegen
+                    .lines().dropLastWhile(String::isBlank).joinToString("\n") // remove blank following lines
+                    .mapLine { "${indent}$it" } // indent
                 """
                         |//// region $regionName CODEGEN ////
                         |
-                        |$indentedCode
+                        |${indentedCode}
                         |
                         |${indent}//// endregion $regionName CODEGEN ////
                     """.trimMargin()
diff --git a/backend/codegen/src/main/kotlin/net/mamoe/mirai/console/codegen/ValueSettingCodegen.kt b/backend/codegen/src/main/kotlin/net/mamoe/mirai/console/codegen/ValueSettingCodegen.kt
index b8c195462..b1cecf118 100644
--- a/backend/codegen/src/main/kotlin/net/mamoe/mirai/console/codegen/ValueSettingCodegen.kt
+++ b/backend/codegen/src/main/kotlin/net/mamoe/mirai/console/codegen/ValueSettingCodegen.kt
@@ -11,6 +11,10 @@
 
 package net.mamoe.mirai.console.codegen
 
+import kotlin.reflect.full.functions
+import kotlin.reflect.full.hasAnnotation
+import kotlin.reflect.full.isSubclassOf
+
 object ValueSettingCodegen {
     /**
      * The interface
@@ -109,6 +113,11 @@ internal fun Setting.valueImpl(default: ${ktType.standardName}): SerializerAware
     return object : ${ktType.standardName}ValueImpl(default) {
         override fun onChanged() = this@valueImpl.onValueChanged(this)
     }
+}
+internal fun Setting.${ktType.lowerCaseName}ValueImpl(): SerializerAwareValue<${ktType.standardName}> {
+    return object : ${ktType.standardName}ValueImpl() {
+        override fun onChanged() = this@${ktType.lowerCaseName}ValueImpl.onValueChanged(this)
+    }
 }
                 """
             )
@@ -125,11 +134,27 @@ internal fun Setting.valueImpl(default: ${ktType.standardName}): SerializerAware
         override fun StringBuilder.apply(ktType: KtType) {
             appendKCode(
                 """
-                ${ktType.standardName}::class -> valueImpl(default as ${ktType.standardName})
+                ${ktType.standardName}::class -> ${ktType.lowerCaseName}ValueImpl()
                 """.trimIndent()
             )
         }
     }
 
-
+    /**
+     * 运行本 object 中所有嵌套 object Codegen
+     */
+    @OptIn(ExperimentalStdlibApi::class)
+    @JvmStatic
+    fun main(args: Array<String>) {
+        ValueSettingCodegen::class.nestedClasses
+            .filter { it.isSubclassOf(RegionCodegen::class) }
+            .associateWith { kClass -> kClass.functions.find { it.name == "main" && it.hasAnnotation<JvmStatic>() } }
+            .filter { it.value != null }
+            .forEach { (kClass, entryPoint) ->
+                println("---------------------------------------------")
+                println("Running Codegen: ${kClass.simpleName}")
+                entryPoint!!.call(kClass.objectInstance, arrayOf<String>())
+                println("---------------------------------------------")
+            }
+    }
 }
\ No newline at end of file