diff --git a/app/build.gradle b/app/build.gradle
index 7f1a4930..320ca8e9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -103,6 +103,9 @@ dependencies {
     implementation "androidx.browser:browser:1.3.0"
     implementation "androidx.viewpager2:viewpager2:1.0.0"
     implementation "androidx.palette:palette-ktx:1.0.0"
+    implementation "androidx.window:window:1.0.0-beta03"
+    implementation "androidx.startup:startup-runtime:1.1.0"
+
 
     //Test
     testImplementation "junit:junit:4.13.2"
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 7170f246..c185eacf 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -277,6 +277,16 @@
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/file_paths_share_img" />
         </provider>
+
+        <provider
+            android:name="androidx.startup.InitializationProvider"
+            android:authorities="com.huanchengfly.tieba.post.androidx-startup"
+            android:exported="false"
+            tools:node="merge">
+            <meta-data
+                android:name="com.huanchengfly.tieba.post.components.WindowInitializer"
+                android:value="androidx.startup" />
+        </provider>
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/assets/easygo.json b/app/src/main/assets/easygo.json
index cb0e79fc..0af8b5c1 100644
--- a/app/src/main/assets/easygo.json
+++ b/app/src/main/assets/easygo.json
@@ -30,21 +30,17 @@
             "from": "com.huanchengfly.tieba.post.activities.MessageActivity",
             "to": "com.huanchengfly.tieba.post.activities.FloorActivity"
           },
-          {
-            "from": "com.huanchengfly.tieba.post.activities.HistoryActivity",
-            "to": "com.huanchengfly.tieba.post.activities.ThreadActivity"
-          },
           {
             "from": "com.huanchengfly.tieba.post.activities.UserCollectActivity",
             "to": "com.huanchengfly.tieba.post.activities.ThreadActivity"
           },
           {
-            "from": "com.huanchengfly.tieba.post.activities.UserActivity",
-            "to": "com.huanchengfly.tieba.post.activities.ThreadActivity"
+            "from": "com.huanchengfly.tieba.post.activities.UserCollectActivity",
+            "to": "com.huanchengfly.tieba.post.activities.UserActivity"
           },
           {
-            "from": "com.huanchengfly.tieba.post.activities.HistoryActivity",
-            "to": "com.huanchengfly.tieba.post.activities.UserCollectActivity"
+            "from": "com.huanchengfly.tieba.post.activities.UserActivity",
+            "to": "com.huanchengfly.tieba.post.activities.ThreadActivity"
           }
         ],
         "transActivities": [],
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/components/WindowInitializer.kt b/app/src/main/java/com/huanchengfly/tieba/post/components/WindowInitializer.kt
new file mode 100644
index 00000000..5044646a
--- /dev/null
+++ b/app/src/main/java/com/huanchengfly/tieba/post/components/WindowInitializer.kt
@@ -0,0 +1,19 @@
+package com.huanchengfly.tieba.post.components
+
+import android.content.Context
+import androidx.startup.Initializer
+import androidx.window.core.ExperimentalWindowApi
+import androidx.window.embedding.SplitController
+import com.huanchengfly.tieba.post.R
+
+@ExperimentalWindowApi
+class WindowInitializer : Initializer<SplitController> {
+    override fun create(context: Context): SplitController {
+        SplitController.initialize(context, R.xml.main_split_config)
+        return SplitController.getInstance()
+    }
+
+    override fun dependencies(): List<Class<out Initializer<*>>> {
+        return emptyList()
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/xml/main_split_config.xml b/app/src/main/res/xml/main_split_config.xml
new file mode 100644
index 00000000..31e53570
--- /dev/null
+++ b/app/src/main/res/xml/main_split_config.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources xmlns:window="http://schemas.android.com/apk/res-auto">
+    <SplitPairRule
+        window:splitRatio="0.5"
+        window:splitMinWidth="600dp"
+        window:finishPrimaryWithSecondary="false"
+        window:finishSecondaryWithPrimary="true">
+        <SplitPairFilter
+            window:primaryActivityName=".activities.MainActivity"
+            window:secondaryActivityName="*/*" />
+        <SplitPairFilter
+            window:primaryActivityName=".activities.NewSearchActivity"
+            window:secondaryActivityName="*/*" />
+        <SplitPairFilter
+            window:primaryActivityName=".activities.ForumActivity"
+            window:secondaryActivityName="*/*" />
+        <SplitPairFilter
+            window:primaryActivityName=".activities.ThreadActivity"
+            window:secondaryActivityName="*/*" />
+        <SplitPairFilter
+            window:primaryActivityName=".activities.MessageActivity"
+            window:secondaryActivityName=".activities.FloorActivity" />
+        <SplitPairFilter
+            window:primaryActivityName=".activities.UserCollectActivity"
+            window:secondaryActivityName=".activities.ThreadActivity" />
+        <SplitPairFilter
+            window:primaryActivityName=".activities.UserCollectActivity"
+            window:secondaryActivityName=".activities.UserActivity" />
+        <SplitPairFilter
+            window:primaryActivityName=".activities.UserActivity"
+            window:secondaryActivityName=".activities.ThreadActivity" />
+    </SplitPairRule>
+</resources>
\ No newline at end of file