diff --git a/mirai-core-api/src/commonMain/kotlin/contact/OtherClient.kt b/mirai-core-api/src/commonMain/kotlin/contact/OtherClient.kt
index 9194efc88..b5a7acfe6 100644
--- a/mirai-core-api/src/commonMain/kotlin/contact/OtherClient.kt
+++ b/mirai-core-api/src/commonMain/kotlin/contact/OtherClient.kt
@@ -115,6 +115,7 @@ public enum class Platform(
 public enum class ClientKind(
     @MiraiInternalApi public val id: Int,
 ) {
+
     ANDROID_PAD(68104),
     AOL_CHAOJIHUIYUAN(73730),
     AOL_HUIYUAN(73474),
@@ -132,7 +133,8 @@ public enum class ClientKind(
     MOBILE_IPAD_NEW(72194),
     MOBILE_IPHONE(67586),
     MOBILE_OTHER(65794),
-    MOBILE_PC(65793),
+    MOBILE_PC_QQ(65793),
+    MOBILE_PC_TIM(77313),
     MOBILE_WINPHONE_NEW(72706),
     QQ_FORELDER(70922),
     QQ_SERVICE(71170),
diff --git a/mirai-core/src/commonMain/kotlin/network/protocol/data/jce/ReqPushStatus.kt b/mirai-core/src/commonMain/kotlin/network/protocol/data/jce/ReqPushStatus.kt
new file mode 100644
index 000000000..2eac217d0
--- /dev/null
+++ b/mirai-core/src/commonMain/kotlin/network/protocol/data/jce/ReqPushStatus.kt
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2020-2021 Mamoe Technologies and contributors.
+ *
+ *  此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
+ *  Use of this source code is governed by the GNU AGPLv3 license that can be found through the following link.
+ *
+ *  https://github.com/mamoe/mirai/blob/master/LICENSE
+ */
+
+package net.mamoe.mirai.internal.network.protocol.data.jce
+
+import kotlinx.serialization.Serializable
+import net.mamoe.mirai.internal.utils.io.JceStruct
+import net.mamoe.mirai.internal.utils.io.serialization.tars.TarsId
+
+
+@Serializable
+internal class RequestPushStatus(
+    @JvmField @TarsId(0) val uin: Long,
+    @JvmField @TarsId(1) val status: Byte,
+    @JvmField @TarsId(2) val dataLine: Byte? = null,
+    @JvmField @TarsId(3) val printable: Byte? = null,
+    @JvmField @TarsId(4) val viewFile: Byte? = null,
+    @JvmField @TarsId(5) val nPCVer: Long? = null,
+    @JvmField @TarsId(6) val nClientType: Long? = null,
+    @JvmField @TarsId(7) val nInstanceId: Long? = null,
+    @JvmField @TarsId(8) val vecInstanceList: List<InstanceInfo>? = null
+) : JceStruct
+
+
diff --git a/mirai-core/src/commonMain/kotlin/network/protocol/packet/PacketFactory.kt b/mirai-core/src/commonMain/kotlin/network/protocol/packet/PacketFactory.kt
index 987fec03a..a820960a4 100644
--- a/mirai-core/src/commonMain/kotlin/network/protocol/packet/PacketFactory.kt
+++ b/mirai-core/src/commonMain/kotlin/network/protocol/packet/PacketFactory.kt
@@ -161,6 +161,7 @@ internal object KnownPacketFactories {
         OnlinePushPbPushTransMsg,
         MessageSvcPushNotify,
         MessageSvcPushReaded,
+        MessageSvcRequestPushStatus,
         ConfigPushSvc.PushReq,
         StatSvc.ReqMSFOffline,
         StatSvc.SvcReqMSFLoginNotify
diff --git a/mirai-core/src/commonMain/kotlin/network/protocol/packet/chat/receive/MessageSvc.RequestPushStatus.kt b/mirai-core/src/commonMain/kotlin/network/protocol/packet/chat/receive/MessageSvc.RequestPushStatus.kt
new file mode 100644
index 000000000..812f0c4bf
--- /dev/null
+++ b/mirai-core/src/commonMain/kotlin/network/protocol/packet/chat/receive/MessageSvc.RequestPushStatus.kt
@@ -0,0 +1,60 @@
+package net.mamoe.mirai.internal.network.protocol.packet.chat.receive
+
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.sync.withLock
+import kotlinx.io.core.ByteReadPacket
+import net.mamoe.mirai.Mirai
+import net.mamoe.mirai.contact.ClientKind
+import net.mamoe.mirai.event.events.OtherClientOfflineEvent
+import net.mamoe.mirai.event.events.OtherClientOnlineEvent
+import net.mamoe.mirai.internal.QQAndroidBot
+import net.mamoe.mirai.internal.contact.appId
+import net.mamoe.mirai.internal.createOtherClient
+import net.mamoe.mirai.internal.message.contextualBugReportException
+import net.mamoe.mirai.internal.network.Packet
+import net.mamoe.mirai.internal.network.protocol.data.jce.RequestPushStatus
+import net.mamoe.mirai.internal.network.protocol.packet.IncomingPacketFactory
+import net.mamoe.mirai.internal.utils._miraiContentToString
+import net.mamoe.mirai.internal.utils.io.serialization.readUniPacket
+
+internal object MessageSvcRequestPushStatus : IncomingPacketFactory<Packet?>(
+    "MessageSvc.RequestPushStatus", ""
+) {
+    override suspend fun ByteReadPacket.decode(bot: QQAndroidBot, sequenceId: Int): Packet? {
+        val packet = readUniPacket(RequestPushStatus.serializer())
+        bot.otherClientsLock.withLock {
+            val appId = packet.vecInstanceList?.firstOrNull()?.iAppId ?: 1
+            return when (packet.status.toInt()) {
+                1 -> { // online
+                    if (bot.otherClients.any { appId == it.appId }) return null
+                    val info = Mirai.getOnlineOtherClientsList(bot).firstOrNull { appId == it.appId }
+                        ?: throw  contextualBugReportException(
+                            "SvcRequestPushStatus (OtherClient online)",
+                            packet._miraiContentToString(),
+                            additional = "Failed to find corresponding instanceInfo."
+                        )
+                    val client = bot.createOtherClient(info)
+                    bot.otherClients.delegate.add(client)
+                    OtherClientOnlineEvent(
+                        client,
+                        ClientKind[packet.nClientType?.toInt() ?: 0]
+                    )
+                }
+
+                2 -> { // off
+                    val client = bot.otherClients.find { it.appId == appId } ?: return null
+                    client.cancel(CancellationException("Offline"))
+                    bot.otherClients.delegate.remove(client)
+                    OtherClientOfflineEvent(client)
+                }
+
+                else -> throw contextualBugReportException(
+                    "decode SvcRequestPushStatus (PC Client status change)",
+                    packet._miraiContentToString(),
+                    additional = "unknown status=${packet.status}"
+                )
+            }
+        }
+    }
+}
\ No newline at end of file