diff --git a/app/src/main/java/com/example/CQUPT/MainActivity.java b/app/src/main/java/com/example/CQUPT/MainActivity.java
index 752691b..3308687 100644
--- a/app/src/main/java/com/example/CQUPT/MainActivity.java
+++ b/app/src/main/java/com/example/CQUPT/MainActivity.java
@@ -53,7 +53,7 @@ protected void onCreate(Bundle savedInstanceState) {
             NavigationView navigationView = binding.navView;
             View headerView = navigationView.getHeaderView(0);
             TextView everyDay = headerView.findViewById(R.id.header_everyday);
-            everyDay.setText("这是每日一言");
+            //everyDay.setText("这是每日一言");
 
             // 配置导航
             mAppBarConfiguration = new AppBarConfiguration.Builder(
diff --git a/app/src/main/java/com/example/CQUPT/ui/course/CourseSelectionFragment.java b/app/src/main/java/com/example/CQUPT/ui/course/CourseSelectionFragment.java
index 21557c7..1fc0bd5 100644
--- a/app/src/main/java/com/example/CQUPT/ui/course/CourseSelectionFragment.java
+++ b/app/src/main/java/com/example/CQUPT/ui/course/CourseSelectionFragment.java
@@ -107,15 +107,11 @@ private void startCourseSelection() {
 
         executor = Executors.newSingleThreadScheduledExecutor();
         executor.scheduleWithFixedDelay(() -> {
-            // Simulate course selection attempt
             for (String course : courses) {
-                // Random success simulation (20% chance)
-                if (new Random().nextInt(100) < 20) {
-                    mainHandler.post(() -> {
-                        adapter.addSuccessCourse(course.trim());
-                        binding.statusText.setText("成功抢到: " + course.trim());
-                    });
-                }
+                mainHandler.post(() -> {
+                    adapter.addSuccessCourse(course.trim());
+                    binding.statusText.setText("成功抢到: " + course.trim());
+                });
             }
         }, 0, delay * 10L, TimeUnit.MILLISECONDS);
     }
diff --git a/app/src/main/java/com/example/CQUPT/ui/news/NewsFragment.java b/app/src/main/java/com/example/CQUPT/ui/news/NewsFragment.java
index f2605c9..28eef15 100644
--- a/app/src/main/java/com/example/CQUPT/ui/news/NewsFragment.java
+++ b/app/src/main/java/com/example/CQUPT/ui/news/NewsFragment.java
@@ -24,7 +24,6 @@
 import retrofit2.Retrofit;
 import retrofit2.converter.gson.GsonConverterFactory;
 
-import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
diff --git a/app/src/main/res/layout/fragment_login.xml b/app/src/main/res/layout/fragment_login.xml
index 42a729d..0756a36 100644
--- a/app/src/main/res/layout/fragment_login.xml
+++ b/app/src/main/res/layout/fragment_login.xml
@@ -159,7 +159,7 @@
         android:id="@+id/profile_image"
         android:layout_width="100dp"
         android:layout_height="100dp"
-        android:src="@drawable/baseline_account_circle_24"
+        android:src="@drawable/logo"
         app:civ_border_width="2dp"
         app:civ_border_color="#FFFFFF"
         app:layout_constraintBottom_toTopOf="@id/login_card"
diff --git a/app/src/main/res/layout/nav_header_main.xml b/app/src/main/res/layout/nav_header_main.xml
index 67d207e..2210109 100644
--- a/app/src/main/res/layout/nav_header_main.xml
+++ b/app/src/main/res/layout/nav_header_main.xml
@@ -19,7 +19,7 @@
         android:padding="4dp"
         android:background="@android:color/white"
         app:shapeAppearanceOverlay="@style/CircleImageView"
-        android:src="@drawable/emoji_happy"
+        android:src="@drawable/logo"
         android:contentDescription="@string/nav_header_desc" />
 
     <TextView
@@ -27,17 +27,17 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginTop="@dimen/nav_header_vertical_spacing"
-        android:text="姓名"
+        android:text="邮兵工具箱"
         android:textAppearance="@style/TextAppearance.MaterialComponents.Subtitle1"
         android:textColor="@android:color/white"
         android:textStyle="bold" />
 
     <TextView
         android:id="@+id/header_everyday"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
         android:layout_marginTop="4dp"
-        android:text="每日一句励志"
+        android:text="Talk is cheap, show me your code."
         android:textAppearance="@style/TextAppearance.MaterialComponents.Caption"
         android:textColor="@android:color/white" />