diff --git a/mirai-core/src/commonMain/kotlin/QQAndroidBot.kt b/mirai-core/src/commonMain/kotlin/QQAndroidBot.kt
index 0584dd79e..24472e73a 100644
--- a/mirai-core/src/commonMain/kotlin/QQAndroidBot.kt
+++ b/mirai-core/src/commonMain/kotlin/QQAndroidBot.kt
@@ -134,7 +134,7 @@ internal open class QQAndroidBot constructor(
                 BdhSessionSyncer,
                 BdhSessionSyncerImpl(configuration, components, networkLogger.subLogger("BotSessionSyncer"))
             )
-            set(ServerList, ServerListImpl())
+            set(ServerList, ServerListImpl(networkLogger.subLogger("ServerList")))
             set(PacketLoggingStrategy, PacketLoggingStrategyImpl(bot))
             set(
                 PacketHandler, PacketHandlerChain(
@@ -146,7 +146,7 @@ internal open class QQAndroidBot constructor(
             set(PacketCodec, PacketCodecImpl())
             set(
                 OtherClientUpdater,
-                OtherClientUpdaterImpl(bot, components, networkLogger.subLogger("BotSessionSyncer"))
+                OtherClientUpdaterImpl(bot, components, networkLogger.subLogger("OtherClientUpdater"))
             )
             set(ConfigPushSyncer, ConfigPushSyncerImpl())
 
diff --git a/mirai-core/src/commonMain/kotlin/network/components/PacketLoggingStrategy.kt b/mirai-core/src/commonMain/kotlin/network/components/PacketLoggingStrategy.kt
index e16392a1d..e1f419381 100644
--- a/mirai-core/src/commonMain/kotlin/network/components/PacketLoggingStrategy.kt
+++ b/mirai-core/src/commonMain/kotlin/network/components/PacketLoggingStrategy.kt
@@ -9,7 +9,6 @@
 
 package net.mamoe.mirai.internal.network.components
 
-import net.mamoe.mirai.event.Event
 import net.mamoe.mirai.event.events.MessageEvent
 import net.mamoe.mirai.internal.AbstractBot
 import net.mamoe.mirai.internal.contact.logMessageReceived
@@ -64,14 +63,14 @@ internal class PacketLoggingStrategyImpl(
     }
 
     private fun logReceivedImpl(packet: Packet, incomingPacket: IncomingPacket, logger: MiraiLogger) {
-        when {
-            packet is MessageEvent -> packet.logMessageReceived()
-            packet is Packet.NoLog -> {
+        when (packet) {
+            is MessageEvent -> packet.logMessageReceived()
+            is Packet.NoLog -> {
                 // nothing to do
             }
-            packet is Event && packet !is Packet.NoEventLog -> bot.logger.verbose {
-                "Event: $packet".replaceMagicCodes()
-            }
+            // packet is Event && packet !is Packet.NoEventLog -> bot.logger.verbose {
+            //     "Event: $packet".replaceMagicCodes()
+            // } // processed in global `Event.broadcast`
             else -> {
                 if (SHOW_PACKET_DETAILS) {
                     logger.verbose { "Recv: ${incomingPacket.commandName} ${incomingPacket.data}".replaceMagicCodes() }
diff --git a/mirai-core/src/commonMain/kotlin/network/components/ServerList.kt b/mirai-core/src/commonMain/kotlin/network/components/ServerList.kt
index 6841b5b46..acae9edec 100644
--- a/mirai-core/src/commonMain/kotlin/network/components/ServerList.kt
+++ b/mirai-core/src/commonMain/kotlin/network/components/ServerList.kt
@@ -12,6 +12,9 @@ package net.mamoe.mirai.internal.network.components
 import kotlinx.serialization.Serializable
 import net.mamoe.mirai.internal.network.component.ComponentKey
 import net.mamoe.mirai.internal.network.components.ServerList.Companion.DEFAULT_SERVER_LIST
+import net.mamoe.mirai.utils.MiraiLogger
+import net.mamoe.mirai.utils.info
+import org.jetbrains.annotations.TestOnly
 import java.net.InetSocketAddress
 import java.util.*
 
@@ -25,6 +28,10 @@ internal data class ServerAddress(
         require(host.isNotBlank()) { "host is invalid: '$host'" }
     }
 
+    override fun toString(): String {
+        return "$host:$port"
+    }
+
     fun toSocketAddress(): InetSocketAddress = InetSocketAddress.createUnresolved(host, port)
 }
 
@@ -78,8 +85,15 @@ internal interface ServerList {
 }
 
 internal class ServerListImpl(
+    private val logger: MiraiLogger,
     initial: Collection<ServerAddress> = emptyList()
 ) : ServerList {
+    @TestOnly
+    constructor(initial: Collection<ServerAddress>) : this(MiraiLogger.TopLevel, initial)
+
+    @TestOnly
+    constructor() : this(MiraiLogger.TopLevel)
+
     @Volatile
     private var preferred: Set<ServerAddress> = DEFAULT_SERVER_LIST
 
@@ -88,6 +102,7 @@ internal class ServerListImpl(
 
     @Synchronized
     override fun setPreferred(list: Collection<ServerAddress>) {
+        logger.info { "Server list: ${list.joinToString()}." }
         require(list.isNotEmpty()) { "list cannot be empty." }
         preferred = list.toSet()
     }
diff --git a/mirai-core/src/commonMain/kotlin/network/context/SsoProcessorContext.kt b/mirai-core/src/commonMain/kotlin/network/context/SsoProcessorContext.kt
index c16a1240d..037cc0961 100644
--- a/mirai-core/src/commonMain/kotlin/network/context/SsoProcessorContext.kt
+++ b/mirai-core/src/commonMain/kotlin/network/context/SsoProcessorContext.kt
@@ -15,6 +15,7 @@ import net.mamoe.mirai.internal.network.component.ComponentKey
 import net.mamoe.mirai.internal.network.components.AccountSecretsManager
 import net.mamoe.mirai.internal.network.components.SsoProcessor
 import net.mamoe.mirai.internal.network.components.createAccountsSecretsManager
+import net.mamoe.mirai.internal.utils.subLogger
 import net.mamoe.mirai.utils.BotConfiguration
 import net.mamoe.mirai.utils.DeviceInfo
 
@@ -45,6 +46,9 @@ internal class SsoProcessorContextImpl(
     override val account: BotAccount get() = bot.account
     override val device: DeviceInfo = configuration.deviceInfo?.invoke(bot) ?: DeviceInfo.random()
     override val protocol: BotConfiguration.MiraiProtocol get() = configuration.protocol
-    override val accountSecretsManager: AccountSecretsManager get() = configuration.createAccountsSecretsManager(bot.logger)
+    override val accountSecretsManager: AccountSecretsManager
+        get() = configuration.createAccountsSecretsManager(
+            bot.logger.subLogger("AccountSecretsManager")
+        )
     override val configuration: BotConfiguration get() = bot.configuration
 }
diff --git a/mirai-core/src/commonMain/kotlin/network/protocol/packet/login/ConfigPushSvc.kt b/mirai-core/src/commonMain/kotlin/network/protocol/packet/login/ConfigPushSvc.kt
index 6e62cfc99..59f016dff 100644
--- a/mirai-core/src/commonMain/kotlin/network/protocol/packet/login/ConfigPushSvc.kt
+++ b/mirai-core/src/commonMain/kotlin/network/protocol/packet/login/ConfigPushSvc.kt
@@ -23,7 +23,6 @@ import net.mamoe.mirai.internal.network.components.BdhSessionSyncer
 import net.mamoe.mirai.internal.network.components.ServerAddress
 import net.mamoe.mirai.internal.network.components.ServerList
 import net.mamoe.mirai.internal.network.context.BdhSession
-import net.mamoe.mirai.internal.network.handler.logger
 import net.mamoe.mirai.internal.network.networkType
 import net.mamoe.mirai.internal.network.protocol.data.jce.FileStoragePushFSSvcList
 import net.mamoe.mirai.internal.network.protocol.data.jce.PushResp
@@ -139,7 +138,6 @@ internal class ConfigPushSvc {
             }
 
             fun handleServerListPush(resp: PushReqResponse.ServerListPush) {
-                bot.network.logger.info { "Server list updated." }
                 val serverListPush = kotlin.runCatching {
                     resp.struct.jcebuf.loadAs(ServerListPush.serializer())
                 }.getOrElse {
@@ -154,8 +152,6 @@ internal class ConfigPushSvc {
                     serverListPush.mobileSSOServerList
                 }
 
-                bot.network.logger.info { "Server list: ${pushServerList.joinToString()}." }
-
                 if (pushServerList.isNotEmpty()) {
                     bot.components[ServerList].setPreferred(
                         pushServerList.shuffled().map { ServerAddress(it.host, it.port) })
diff --git a/mirai-core/src/commonMain/kotlin/utils/SubLogger.kt b/mirai-core/src/commonMain/kotlin/utils/SubLogger.kt
index b64179290..c53f99b87 100644
--- a/mirai-core/src/commonMain/kotlin/utils/SubLogger.kt
+++ b/mirai-core/src/commonMain/kotlin/utils/SubLogger.kt
@@ -20,6 +20,7 @@ private class SubLogger(
     private val main: MiraiLogger,
 ) : MiraiLoggerPlatformBase() {
     override val identity: String? get() = main.identity
+    override val isEnabled: Boolean get() = main.isEnabled
 
     override fun verbose0(message: String?, e: Throwable?) {
         if (message != null) {