diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/ContactImpl.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/ContactImpl.kt
index 39433be13..54ea1aa27 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/ContactImpl.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/ContactImpl.kt
@@ -2,10 +2,9 @@ package net.mamoe.mirai.qqandroid
 
 import net.mamoe.mirai.contact.*
 import net.mamoe.mirai.data.FriendNameRemark
-import net.mamoe.mirai.data.GroupInfo
 import net.mamoe.mirai.data.PreviousNameList
 import net.mamoe.mirai.data.Profile
-import net.mamoe.mirai.message.data.ImageId
+import net.mamoe.mirai.message.data.Image
 import net.mamoe.mirai.message.data.MessageChain
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.receive.MessageSvc
 import net.mamoe.mirai.utils.*
@@ -28,7 +27,7 @@ internal class QQImpl(bot: QQAndroidBot, override val coroutineContext: Coroutin
         }
     }
 
-    override suspend fun uploadImage(image: ExternalImage): ImageId {
+    override suspend fun uploadImage(image: ExternalImage): Image {
         TODO("not implemented")
     }
 
@@ -81,6 +80,10 @@ internal class GroupImpl(
     override lateinit var announcement: String
     override lateinit var members: ContactList<Member>
 
+    init {
+        members = ContactList(LockFreeLinkedList())
+    }
+
     override val internalId: GroupInternalId = GroupId(id).toInternalId()
 
     override fun getMember(id: Long): Member =
@@ -115,7 +118,7 @@ internal class GroupImpl(
         }
     }
 
-    override suspend fun uploadImage(image: ExternalImage): ImageId {
+    override suspend fun uploadImage(image: ExternalImage): Image {
         TODO("not implemented")
     }
 
diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/QQAndroidBot.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/QQAndroidBot.kt
index 861b8d66d..2609f97bb 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/QQAndroidBot.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/QQAndroidBot.kt
@@ -1,14 +1,13 @@
 package net.mamoe.mirai.qqandroid
 
+import kotlinx.io.core.ByteReadPacket
 import net.mamoe.mirai.BotAccount
 import net.mamoe.mirai.BotImpl
 import net.mamoe.mirai.contact.*
 import net.mamoe.mirai.data.AddFriendResult
-import net.mamoe.mirai.data.ImageLink
 import net.mamoe.mirai.message.data.Image
 import net.mamoe.mirai.qqandroid.network.QQAndroidBotNetworkHandler
 import net.mamoe.mirai.qqandroid.network.QQAndroidClient
-import net.mamoe.mirai.qqandroid.utils.ImageIdQQA
 import net.mamoe.mirai.utils.BotConfiguration
 import net.mamoe.mirai.utils.Context
 import net.mamoe.mirai.utils.LockFreeLinkedList
@@ -56,12 +55,15 @@ internal abstract class QQAndroidBotBase constructor(
         return groups.delegate.filteringGetOrAdd({ it.id == id }, { GroupImpl(this as QQAndroidBot, coroutineContext, id) })
     }
 
-    override suspend fun Image.getLink(): ImageLink {
-        require(this.id is ImageIdQQA) { "image.id must be ImageIdQQA" }
-        return (this.id as ImageIdQQA).link
+    override suspend fun addFriend(id: Long, message: String?, remark: String?): AddFriendResult {
+        TODO("not implemented")
     }
 
-    override suspend fun addFriend(id: Long, message: String?, remark: String?): AddFriendResult {
+    override suspend fun Image.download(): ByteReadPacket {
+        TODO("not implemented")
+    }
+
+    override suspend fun Image.downloadAsByteArray(): ByteArray {
         TODO("not implemented")
     }
 
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Image.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Image.kt
index c3ec60093..b3a9a9be6 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Image.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Image.kt
@@ -2,76 +2,44 @@
 
 package net.mamoe.mirai.message.data
 
-import net.mamoe.mirai.contact.Contact
-import net.mamoe.mirai.contact.sendMessage
-import net.mamoe.mirai.utils.ExternalImage
+sealed class Image : Message {
+    abstract val resourceId: String
 
+    abstract override fun toString(): String
 
-fun Image(id: String) = Image(ImageId(id))
+    final companion object Key : Message.Key<Image>
 
-/**
- * 图片消息. 在发送时将会区分群图片和好友图片发送.
- * 由接收消息时构建, 可直接发送
- *
- * @param id 这个图片的 [ImageId]
- */ // TODO: 2020/1/31 去掉 Image.  将 Image 改为 interface/class
-inline class Image(inline val id: ImageId) : Message {
-    override fun toString(): String = "[${id.value}]"
+    abstract override fun eq(other: Message): Boolean
+}
 
-    companion object Key : Message.Key<Image>
+abstract class NotOnlineImage : Image() {
+    abstract override val resourceId: String
+    abstract val md5: ByteArray
+    abstract val filepath: String
+    abstract val fileLength: Int
+    abstract val height: Int
+    abstract val width: Int
+    open val bizType: Int get() = 0
+    open val imageType: Int get() = 1000
+    open val downloadPath: String get() = resourceId
+
+    override fun toString(): String {
+        return "[$resourceId]"
+    }
 
     override fun eq(other: Message): Boolean {
-        return other is Image && other.id == this.id
+        return other.toString() == this.toString()
     }
 }
 
-inline val Image.idValue: String get() = id.value
-
-inline class ImageId0x06(override inline val value: String) : ImageId {
-    override fun toString(): String = "ImageId($value)"
-}
-
-/**
- * 一般是群的图片的 id.
- */
-class ImageId0x03 constructor(override inline val value: String, inline val uniqueId: UInt, inline val height: Int, inline val width: Int) :
-    ImageId {
-    override fun toString(): String = "ImageId(value=$value, uniqueId=${uniqueId}, height=$height, width=$width)"
-
-    val md5: ByteArray
-        get() = this.value
-            .substringAfter("{").substringBefore("}")
-            .replace("-", "")
-            .chunked(2)
-            .map { (it[0] + it[1].toString()).toUByte(16).toByte() }
-            .toByteArray().also { check(it.size == 16) }
-}
-
-@Suppress("FunctionName", "NOTHING_TO_INLINE")
-inline fun ImageId(value: String): ImageId = ImageId0x06(value)
-
-@Suppress("FunctionName", "NOTHING_TO_INLINE")
-inline fun ImageId(value: String, uniqueId: UInt, height: Int, width: Int): ImageId =
-    ImageId0x03(value, uniqueId, height, width)
-
-
-/**
- * 图片的标识符. 由图片的数据产生.
- * 对于群, [value] 类似于 `{F61593B5-5B98-1798-3F47-2A91D32ED2FC}.jpg`, 由图片文件 MD5 直接产生.
- * 对于好友, [value] 类似于 `/01ee6426-5ff1-4cf0-8278-e8634d2909ef`, 由服务器返回.
- *
- * @see ExternalImage.groupImageId 群图片的 [ImageId] 获取
- * @see FriendImagePacket 好友图片的 [ImageId] 获取
- */
-interface ImageId {
-    val value: String
-}
-
-fun ImageId.checkLength() = check(value.length == 37 || value.length == 42) { "Illegal ImageId length" }
-fun ImageId.requireLength() = require(value.length == 37 || value.length == 42) { "Illegal ImageId length" }
-
-@Suppress("NOTHING_TO_INLINE")
-inline fun ImageId.image(): Image =
-    Image(this)
-
-suspend inline fun ImageId.sendTo(contact: Contact) = contact.sendMessage(this.image())
+open class NotOnlineImageFromFile(
+    override val resourceId: String,
+    override val md5: ByteArray,
+    override val filepath: String,
+    override val fileLength: Int,
+    override val height: Int,
+    override val width: Int,
+    override val bizType: Int = 0,
+    override val imageType: Int = 1000,
+    override val downloadPath: String = resourceId
+) : NotOnlineImage()
\ No newline at end of file
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/ExternalImage.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/ExternalImage.kt
index 8a6f59f42..a0d5d2617 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/ExternalImage.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/ExternalImage.kt
@@ -45,19 +45,6 @@ class ExternalImage(
         }
     }
 
-    /**
-     * 用于发送消息的 [ImageId]
-     */
-    @Suppress("EXPERIMENTAL_UNSIGNED_LITERALS")
-    val groupImageId: ImageId by lazy {
-        ImageId0x03(
-            "{${md5[0..3]}-${md5[4..5]}-${md5[6..7]}-${md5[8..9]}-${md5[10..15]}}.$format",
-            0u,
-            height,
-            width
-        )
-    }
-
     override fun toString(): String = "[ExternalImage(${width}x$height $format)]"
 }
 
@@ -77,8 +64,8 @@ suspend fun ExternalImage.sendTo(contact: Contact) = when (contact) {
  * @see contact 图片上传对象. 由于好友图片与群图片不通用, 上传时必须提供目标联系人
  */
 suspend fun ExternalImage.upload(contact: Contact): Image = when (contact) {
-    is Group -> contact.uploadImage(this).image()
-    is QQ -> contact.uploadImage(this).image()
+    is Group -> contact.uploadImage(this)
+    is QQ -> contact.uploadImage(this)
     else -> assertUnreachable()
 }