diff --git a/edxp-common/.gitignore b/edxp-common/.gitignore
new file mode 100644
index 00000000..796b96d1
--- /dev/null
+++ b/edxp-common/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/edxp-common/build.gradle b/edxp-common/build.gradle
new file mode 100644
index 00000000..25ac598b
--- /dev/null
+++ b/edxp-common/build.gradle
@@ -0,0 +1,49 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 28
+
+    defaultConfig {
+        minSdkVersion 26
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+}
+
+dependencies {
+    compileOnly files("libs/framework-stub.jar")
+    implementation project(':xposed-bridge')
+    compileOnly project(':dexmaker')
+}
+
+
+preBuild.doLast {
+    def imlFile = file(project.name + ".iml")
+    println 'Change ' + project.name + '.iml order'
+    try {
+        def parsedXml = (new groovy.util.XmlParser()).parse(imlFile)
+        def jdkNode = parsedXml.component[1].orderEntry.find { it.'@type' == 'jdk' }
+        parsedXml.component[1].remove(jdkNode)
+        def sdkString = "Android API " + android.compileSdkVersion.substring("android-".length()) + " Platform"
+        new groovy.util.Node(parsedXml.component[1], 'orderEntry', ['type': 'jdk', 'jdkName': sdkString, 'jdkType': 'Android SDK'])
+        groovy.xml.XmlUtil.serialize(parsedXml, new FileOutputStream(imlFile))
+    } catch (FileNotFoundException e) {
+        // nop, iml not found
+    }
+}
+
+afterEvaluate {
+
+    tasks.withType(JavaCompile) {
+        options.compilerArgs.add("-Xbootclasspath/p:${projectDir.absolutePath}/libs/framework-stub.jar")
+    }
+}
\ No newline at end of file
diff --git a/edxp-common/libs/framework-stub.jar b/edxp-common/libs/framework-stub.jar
new file mode 100644
index 00000000..36cd86b3
Binary files /dev/null and b/edxp-common/libs/framework-stub.jar differ
diff --git a/edxp-common/proguard-rules.pro b/edxp-common/proguard-rules.pro
new file mode 100644
index 00000000..721fdf5c
--- /dev/null
+++ b/edxp-common/proguard-rules.pro
@@ -0,0 +1,31 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
+
+-dontobfuscate
+-keep class de.robv.android.xposed.** {*;}
+-keep class android.** { *; }
+
+-keep interface com.elderdrivers.riru.common.KeepAll
+-keep interface com.elderdrivers.riru.common.KeepMembers
+
+-keep class * implements com.elderdrivers.riru.common.KeepAll { *; }
+-keepclassmembers class * implements com.elderdrivers.riru.common.KeepMembers { *; }
\ No newline at end of file
diff --git a/edxp-common/src/main/AndroidManifest.xml b/edxp-common/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..d879e9df
--- /dev/null
+++ b/edxp-common/src/main/AndroidManifest.xml
@@ -0,0 +1 @@
+<manifest package="com.elderdrivers.riru.edxp.common" />
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/common/KeepAll.java b/edxp-common/src/main/java/com/elderdrivers/riru/common/KeepAll.java
similarity index 100%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/common/KeepAll.java
rename to edxp-common/src/main/java/com/elderdrivers/riru/common/KeepAll.java
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/common/KeepMembers.java b/edxp-common/src/main/java/com/elderdrivers/riru/common/KeepMembers.java
similarity index 100%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/common/KeepMembers.java
rename to edxp-common/src/main/java/com/elderdrivers/riru/common/KeepMembers.java
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/config/ConfigManager.java b/edxp-common/src/main/java/com/elderdrivers/riru/edxp/config/ConfigManager.java
similarity index 100%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/config/ConfigManager.java
rename to edxp-common/src/main/java/com/elderdrivers/riru/edxp/config/ConfigManager.java
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/config/InstallerChooser.java b/edxp-common/src/main/java/com/elderdrivers/riru/edxp/config/InstallerChooser.java
similarity index 88%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/config/InstallerChooser.java
rename to edxp-common/src/main/java/com/elderdrivers/riru/edxp/config/InstallerChooser.java
index 1caa1491..9e829296 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/config/InstallerChooser.java
+++ b/edxp-common/src/main/java/com/elderdrivers/riru/edxp/config/InstallerChooser.java
@@ -10,23 +10,25 @@ import java.util.concurrent.atomic.AtomicBoolean;
 import de.robv.android.xposed.SELinuxHelper;
 import de.robv.android.xposed.services.BaseService;
 
-import static com.elderdrivers.riru.edxp.yahfa.Main.getInstallerPkgName;
-
 public class InstallerChooser {
 
     private static final AtomicBoolean hasSet = new AtomicBoolean(false);
+    @SuppressLint("SdCardPath")
     private static final String DATA_DIR_PATH_PREFIX =
-            Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ? "/data/user_de/0/" : "/data/data/";
+            Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ? "/data/user_de/0/" : "/data/user/0/";
 
 
     public static final String PRIMARY_INSTALLER_PACKAGE_NAME = "com.solohsu.android.edxp.manager";
     public static final String SECONDARY_INSTALLER_PACKAGE_NAME = "org.meowcat.edxposed.manager";
     public static final String LEGACY_INSTALLER_PACKAGE_NAME = "de.robv.android.xposed.installer";
 
-    public static String INSTALLER_PACKAGE_NAME = getInstallerPkgName();
-    @SuppressLint("SdCardPath")
-    public static String INSTALLER_DATA_BASE_DIR = DATA_DIR_PATH_PREFIX + INSTALLER_PACKAGE_NAME + "/";
+    public static String INSTALLER_PACKAGE_NAME;
+    public static String INSTALLER_DATA_BASE_DIR;
 
+    public static void setInstallerPackageName(String packageName) {
+        INSTALLER_PACKAGE_NAME = packageName;
+        INSTALLER_DATA_BASE_DIR = DATA_DIR_PATH_PREFIX + INSTALLER_PACKAGE_NAME + "/";
+    }
 
     public static void setup() {
         if (!hasSet.compareAndSet(false, true)) {
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/ClassLoaderUtils.java b/edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/ClassLoaderUtils.java
similarity index 100%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/ClassLoaderUtils.java
rename to edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/ClassLoaderUtils.java
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/DexUtils.java b/edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/DexUtils.java
similarity index 100%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/DexUtils.java
rename to edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/DexUtils.java
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/FileUtils.java b/edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/FileUtils.java
similarity index 100%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/FileUtils.java
rename to edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/FileUtils.java
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/ProcessUtils.java b/edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/ProcessUtils.java
similarity index 92%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/ProcessUtils.java
rename to edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/ProcessUtils.java
index a860c8a0..b0e8edaa 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/ProcessUtils.java
+++ b/edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/ProcessUtils.java
@@ -3,8 +3,6 @@ package com.elderdrivers.riru.edxp.util;
 import android.os.Process;
 import android.text.TextUtils;
 
-import com.elderdrivers.riru.edxp.yahfa.Main;
-
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
@@ -16,8 +14,7 @@ public class ProcessUtils {
     public static final int PER_USER_RANGE = 100000;
     public static final int USER_SYSTEM = 0;
 
-    public static String getCurrentProcessName() {
-        String prettyName = Main.appProcessName;
+    public static String getCurrentProcessName(String prettyName) {
         if (!TextUtils.isEmpty(prettyName)) {
             return prettyName;
         }
@@ -26,8 +23,6 @@ public class ProcessUtils {
 
     /**
      * a common solution from https://stackoverflow.com/a/21389402
-     * <p>
-     * use {@link Main#appProcessName} to get current process name
      */
     public static String getProcessName(int pid) {
         BufferedReader cmdlineReader = null;
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/Utils.java b/edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/Utils.java
similarity index 100%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/Utils.java
rename to edxp-common/src/main/java/com/elderdrivers/riru/edxp/util/Utils.java
diff --git a/edxp-yahfa/build.gradle b/edxp-yahfa/build.gradle
index f8e0e74f..ea531df8 100644
--- a/edxp-yahfa/build.gradle
+++ b/edxp-yahfa/build.gradle
@@ -22,6 +22,7 @@ android {
 
 dependencies {
     compileOnly files("libs/framework-stub.jar")
+    implementation project(':edxp-common')
     implementation project(':xposed-bridge')
     compileOnly project(':dexmaker')
 }
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/Main.java b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/Main.java
index 73edd260..f855d593 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/Main.java
+++ b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/Main.java
@@ -6,6 +6,7 @@ import android.os.Process;
 
 import com.elderdrivers.riru.common.KeepAll;
 import com.elderdrivers.riru.edxp.BuildConfig;
+import com.elderdrivers.riru.edxp.config.InstallerChooser;
 import com.elderdrivers.riru.edxp.yahfa.core.HookMethodResolver;
 import com.elderdrivers.riru.edxp.yahfa.entry.Router;
 import com.elderdrivers.riru.edxp.yahfa.proxy.BlackWhiteListProxy;
@@ -28,6 +29,7 @@ public class Main implements KeepAll {
         init(Build.VERSION.SDK_INT);
         HookMethodResolver.init();
         Router.injectConfig();
+        InstallerChooser.setInstallerPackageName(getInstallerPkgName());
     }
 
     ///////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/config/YahfaHookProvider.java b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/config/YahfaHookProvider.java
index a160de32..c573f441 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/config/YahfaHookProvider.java
+++ b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/config/YahfaHookProvider.java
@@ -1,7 +1,7 @@
 package com.elderdrivers.riru.edxp.yahfa.config;
 
 import com.elderdrivers.riru.edxp.hook.HookProvider;
-import com.elderdrivers.riru.edxp.util.PrebuiltMethodsDeopter;
+import com.elderdrivers.riru.edxp.yahfa.util.PrebuiltMethodsDeopter;
 import com.elderdrivers.riru.edxp.yahfa.dexmaker.DexMakerUtils;
 import com.elderdrivers.riru.edxp.yahfa.dexmaker.DynamicBridge;
 
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/dexmaker/DynamicBridge.java b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/dexmaker/DynamicBridge.java
index 2905a53b..a6307f7b 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/dexmaker/DynamicBridge.java
+++ b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/dexmaker/DynamicBridge.java
@@ -76,7 +76,7 @@ public final class DynamicBridge {
             // in case some app is installing hooks before phone is unlocked
             String fixedAppDataDir = getDataPathPrefix() + getPackageName(Main.appDataDir) + "/";
             dexDir = new File(fixedAppDataDir, "/cache/edhookers/"
-                    + getCurrentProcessName().replace(":", "_") + "/");
+                    + getCurrentProcessName(Main.appProcessName).replace(":", "_") + "/");
             dexOptDir = new File(dexDir, "oat");
             dexDir.mkdirs();
             DexLog.d(Main.appProcessName + " deleting dir: " + dexOptDir.getAbsolutePath());
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/entry/hooker/SystemMainHooker.java b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/entry/hooker/SystemMainHooker.java
index 92546c91..2478f2e6 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/entry/hooker/SystemMainHooker.java
+++ b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/entry/hooker/SystemMainHooker.java
@@ -3,7 +3,7 @@ package com.elderdrivers.riru.edxp.yahfa.entry.hooker;
 import android.app.ActivityThread;
 
 import com.elderdrivers.riru.common.KeepMembers;
-import com.elderdrivers.riru.edxp.util.PrebuiltMethodsDeopter;
+import com.elderdrivers.riru.edxp.yahfa.util.PrebuiltMethodsDeopter;
 import com.elderdrivers.riru.edxp.yahfa.entry.Router;
 
 import de.robv.android.xposed.XposedBridge;
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/proxy/BlackWhiteListProxy.java b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/proxy/BlackWhiteListProxy.java
index aa0ba58c..dd59ee82 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/proxy/BlackWhiteListProxy.java
+++ b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/proxy/BlackWhiteListProxy.java
@@ -5,7 +5,7 @@ import android.text.TextUtils;
 import com.elderdrivers.riru.edxp.yahfa.Main;
 import com.elderdrivers.riru.edxp.config.ConfigManager;
 import com.elderdrivers.riru.edxp.yahfa.entry.Router;
-import com.elderdrivers.riru.edxp.util.PrebuiltMethodsDeopter;
+import com.elderdrivers.riru.edxp.yahfa.util.PrebuiltMethodsDeopter;
 import com.elderdrivers.riru.edxp.util.ProcessUtils;
 import com.elderdrivers.riru.edxp.util.Utils;
 
@@ -112,7 +112,7 @@ public class BlackWhiteListProxy {
         boolean needHook;
         if (TextUtils.isEmpty(appDataDir)) {
             Utils.logE("niceName:" + niceName + ", procName:"
-                    + ProcessUtils.getCurrentProcessName() + ", appDataDir is null, blacklisted!");
+                    + ProcessUtils.getCurrentProcessName(Main.appProcessName) + ", appDataDir is null, blacklisted!");
             needHook = false;
         } else {
             // FIXME some process cannot read app_data_file because of MLS, e.g. bluetooth
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/proxy/NormalProxy.java b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/proxy/NormalProxy.java
index 2ccd5963..0df49cd6 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/proxy/NormalProxy.java
+++ b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/proxy/NormalProxy.java
@@ -2,7 +2,7 @@ package com.elderdrivers.riru.edxp.yahfa.proxy;
 
 import com.elderdrivers.riru.edxp.yahfa.Main;
 import com.elderdrivers.riru.edxp.config.ConfigManager;
-import com.elderdrivers.riru.edxp.util.PrebuiltMethodsDeopter;
+import com.elderdrivers.riru.edxp.yahfa.util.PrebuiltMethodsDeopter;
 import com.elderdrivers.riru.edxp.yahfa.entry.Router;
 
 import static com.elderdrivers.riru.edxp.util.FileUtils.getDataPathPrefix;
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/InlinedMethodCallers.java b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/util/InlinedMethodCallers.java
similarity index 97%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/InlinedMethodCallers.java
rename to edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/util/InlinedMethodCallers.java
index f4efe27d..15fffeb0 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/InlinedMethodCallers.java
+++ b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/util/InlinedMethodCallers.java
@@ -1,4 +1,4 @@
-package com.elderdrivers.riru.edxp.util;
+package com.elderdrivers.riru.edxp.yahfa.util;
 
 import java.util.HashMap;
 
diff --git a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/PrebuiltMethodsDeopter.java b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/util/PrebuiltMethodsDeopter.java
similarity index 80%
rename from edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/PrebuiltMethodsDeopter.java
rename to edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/util/PrebuiltMethodsDeopter.java
index caee422b..86041628 100644
--- a/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/util/PrebuiltMethodsDeopter.java
+++ b/edxp-yahfa/src/main/java/com/elderdrivers/riru/edxp/yahfa/util/PrebuiltMethodsDeopter.java
@@ -1,13 +1,14 @@
-package com.elderdrivers.riru.edxp.util;
+package com.elderdrivers.riru.edxp.yahfa.util;
 
+import com.elderdrivers.riru.edxp.util.Utils;
 import com.elderdrivers.riru.edxp.yahfa.Main;
 
 import java.util.Arrays;
 
 import de.robv.android.xposed.XposedHelpers;
 
-import static com.elderdrivers.riru.edxp.util.InlinedMethodCallers.KEY_BOOT_IMAGE;
-import static com.elderdrivers.riru.edxp.util.InlinedMethodCallers.KEY_SYSTEM_SERVER;
+import static com.elderdrivers.riru.edxp.yahfa.util.InlinedMethodCallers.KEY_BOOT_IMAGE;
+import static com.elderdrivers.riru.edxp.yahfa.util.InlinedMethodCallers.KEY_SYSTEM_SERVER;
 
 public class PrebuiltMethodsDeopter {
 
diff --git a/settings.gradle b/settings.gradle
index 0608b9f8..2b7924b5 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1 +1 @@
-include ':edxp-core', ':xposed-bridge', ':hiddenapi-stubs', ':dexmaker', ':dalvikdx', ':edxp-yahfa'
\ No newline at end of file
+include ':edxp-core', ':xposed-bridge', ':hiddenapi-stubs', ':dexmaker', ':dalvikdx', ':edxp-yahfa', ':edxp-common'
\ No newline at end of file