diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index c704e7b..ad03b2b 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -13,6 +13,7 @@
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/app" />
             <option value="$PROJECT_DIR$/cm_utils" />
+            <option value="$PROJECT_DIR$/exam" />
             <option value="$PROJECT_DIR$/moduleijkplayer" />
           </set>
         </option>
diff --git a/exam/.gitignore b/exam/.gitignore
new file mode 100644
index 0000000..42afabf
--- /dev/null
+++ b/exam/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/exam/build.gradle b/exam/build.gradle
new file mode 100644
index 0000000..d3e57a1
--- /dev/null
+++ b/exam/build.gradle
@@ -0,0 +1,38 @@
+plugins {
+    id 'com.android.library'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles "consumer-rules.pro"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.2.1'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+}
\ No newline at end of file
diff --git a/exam/consumer-rules.pro b/exam/consumer-rules.pro
new file mode 100644
index 0000000..e69de29
diff --git a/exam/proguard-rules.pro b/exam/proguard-rules.pro
new file mode 100644
index 0000000..481bb43
--- /dev/null
+++ b/exam/proguard-rules.pro
@@ -0,0 +1,21 @@
+# 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
\ No newline at end of file
diff --git a/exam/src/androidTest/java/com/tengshisoft/exam/ExampleInstrumentedTest.java b/exam/src/androidTest/java/com/tengshisoft/exam/ExampleInstrumentedTest.java
new file mode 100644
index 0000000..3ee8813
--- /dev/null
+++ b/exam/src/androidTest/java/com/tengshisoft/exam/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.tengshisoft.exam;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.tengshisoft.exam.test", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/exam/src/main/AndroidManifest.xml b/exam/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..59b72fa
--- /dev/null
+++ b/exam/src/main/AndroidManifest.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.tengshisoft.exam">
+
+</manifest>
\ No newline at end of file
diff --git a/exam/src/test/java/com/tengshisoft/exam/ExampleUnitTest.java b/exam/src/test/java/com/tengshisoft/exam/ExampleUnitTest.java
new file mode 100644
index 0000000..d712470
--- /dev/null
+++ b/exam/src/test/java/com/tengshisoft/exam/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.tengshisoft.exam;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/settings.gradle b/settings.gradle
index 6f56aca..8d71730 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,2 +1,3 @@
+include ':exam'
 rootProject.name='Course'
 include ':app', ':cm_utils', ':moduleijkplayer'