diff --git a/MiNote/app/src/main/java/net/micode/notes/data/Contact.java b/MiNote/app/src/main/java/net/micode/notes/data/Contact.java
index d97ac5d..6fcd914 100644
--- a/MiNote/app/src/main/java/net/micode/notes/data/Contact.java
+++ b/MiNote/app/src/main/java/net/micode/notes/data/Contact.java
@@ -25,10 +25,12 @@ import android.util.Log;
 
 import java.util.HashMap;
 
+// 联系人
 public class Contact {
     private static HashMap<String, String> sContactCache;
     private static final String TAG = "Contact";
 
+    // 定义字符串CALLER_ID_SELECTION
     private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
     + ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
     + " AND " + Data.RAW_CONTACT_ID + " IN "
@@ -36,17 +38,20 @@ public class Contact {
             + " FROM phone_lookup"
             + " WHERE min_match = '+')";
 
+    // 获取联系人
     public static String getContact(Context context, String phoneNumber) {
         if(sContactCache == null) {
             sContactCache = new HashMap<String, String>();
         }
 
+        // 查找HashMap中是否已有phoneNumber信息
         if(sContactCache.containsKey(phoneNumber)) {
             return sContactCache.get(phoneNumber);
         }
 
         String selection = CALLER_ID_SELECTION.replace("+",
                 PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
+        // 查找数据库中phoneNumber的信息
         Cursor cursor = context.getContentResolver().query(
                 Data.CONTENT_URI,
                 new String [] { Phone.DISPLAY_NAME },
@@ -54,17 +59,21 @@ public class Contact {
                 new String[] { phoneNumber },
                 null);
 
+        // 判定查询结果
+        // moveToFirst() 返回第一条
         if (cursor != null && cursor.moveToFirst()) {
             try {
                 String name = cursor.getString(0);
                 sContactCache.put(phoneNumber, name);
                 return name;
+                // 异常
             } catch (IndexOutOfBoundsException e) {
                 Log.e(TAG, " Cursor get string error " + e.toString());
                 return null;
             } finally {
                 cursor.close();
             }
+            // 未找到相关信息
         } else {
             Log.d(TAG, "No contact matched with number:" + phoneNumber);
             return null;
diff --git a/MiNote/app/src/main/java/net/micode/notes/data/Notes.java b/MiNote/app/src/main/java/net/micode/notes/data/Notes.java
index f240604..00a0878 100644
--- a/MiNote/app/src/main/java/net/micode/notes/data/Notes.java
+++ b/MiNote/app/src/main/java/net/micode/notes/data/Notes.java
@@ -20,6 +20,8 @@ import android.net.Uri;
 public class Notes {
     public static final String AUTHORITY = "micode_notes";
     public static final String TAG = "Notes";
+
+    // 以下三个常量在设置NoteColumns.TYPE的时会用到
     public static final int TYPE_NOTE     = 0;
     public static final int TYPE_FOLDER   = 1;
     public static final int TYPE_SYSTEM   = 2;
@@ -54,13 +56,17 @@ public class Notes {
     /**
      * Uri to query all notes and folders
      */
-    public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
+    // 定义查询便签和文件夹的指针
+    public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");//
 
     /**
      * Uri to query data
      */
+    // 定义查找数据的指针
     public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
 
+    // 定义NoteColumns的常量，用于后面创建数据库的表头
+    // 这些常量主要用于定义便签的属性
     public interface NoteColumns {
         /**
          * The unique ID for a row
@@ -167,6 +173,8 @@ public class Notes {
         public static final String VERSION = "version";
     }
 
+    // 定义DataColumns的常量，用于后面创建数据库的表头
+    // 主要用于定义储存便签内容数据
     public interface DataColumns {
         /**
          * The unique ID for a row
@@ -241,6 +249,7 @@ public class Notes {
         public static final String DATA5 = "data5";
     }
 
+    // 文本内容的数据结构
     public static final class TextNote implements DataColumns {
         /**
          * Mode to indicate the text in check list mode or not
@@ -257,6 +266,7 @@ public class Notes {
         public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");
     }
 
+    // 电话内容的数据结构
     public static final class CallNote implements DataColumns {
         /**
          * Call date for this record
diff --git a/MiNote/app/src/main/java/net/micode/notes/data/NotesDatabaseHelper.java b/MiNote/app/src/main/java/net/micode/notes/data/NotesDatabaseHelper.java
index ffe5d57..1f4e4f2 100644
--- a/MiNote/app/src/main/java/net/micode/notes/data/NotesDatabaseHelper.java
+++ b/MiNote/app/src/main/java/net/micode/notes/data/NotesDatabaseHelper.java
@@ -16,22 +16,23 @@
 
 package net.micode.notes.data;
 
-import android.content.ContentValues;
-import android.content.Context;
-import android.database.sqlite.SQLiteDatabase;
-import android.database.sqlite.SQLiteOpenHelper;
+import android.content.ContentValues;// 用于保存数据信息，这些信息可以被数据库操作时使用
+import android.content.Context;// 加载和访问资源
+import android.database.sqlite.SQLiteDatabase;// 主要提供了用于添加、删除、更新、查询的操作方法：insert(), delete(), update()和query()。配合content.values使用
+import android.database.sqlite.SQLiteOpenHelper;// 用于管理数据的创建和版本更新
 import android.util.Log;
 
 import net.micode.notes.data.Notes.DataColumns;
 import net.micode.notes.data.Notes.DataConstants;
 import net.micode.notes.data.Notes.NoteColumns;
 
-
+// 数据库操作，用于SQLOpenHelper，对一些note和文件进行数据库的操作，比如删除文件时删除对应的note
 public class NotesDatabaseHelper extends SQLiteOpenHelper {
     private static final String DB_NAME = "note.db";
 
     private static final int DB_VERSION = 4;
 
+    // 接口，分为note和data
     public interface TABLE {
         public static final String NOTE = "note";
 
@@ -42,6 +43,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
 
     private static NotesDatabaseHelper mInstance;
 
+    // 数据库中需要存储的项目的名称，创建表头内容
     private static final String CREATE_NOTE_TABLE_SQL =
         "CREATE TABLE " + TABLE.NOTE + "(" +
             NoteColumns.ID + " INTEGER PRIMARY KEY," +
@@ -63,6 +65,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
             NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
         ")";
 
+    // 同上，存储项目不同
     private static final String CREATE_DATA_TABLE_SQL =
         "CREATE TABLE " + TABLE.DATA + "(" +
             DataColumns.ID + " INTEGER PRIMARY KEY," +
@@ -78,6 +81,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
             DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
         ")";
 
+    // 存储便签编号的数据表格
     private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
         "CREATE INDEX IF NOT EXISTS note_id_index ON " +
         TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";
@@ -85,6 +89,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Increase folder's note count when move note to the folder
      */
+    // 在文件夹中移入一个Note之后需要更改的数据表格
     private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
         "CREATE TRIGGER increase_folder_count_on_update "+
         " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
@@ -97,6 +102,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Decrease folder's note count when move note from folder
      */
+    // 在文件夹中移出一个Note之后需要更改的数据表格
     private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
         "CREATE TRIGGER decrease_folder_count_on_update " +
         " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
@@ -110,6 +116,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Increase folder's note count when insert new note to the folder
      */
+    // 在文件夹中插入一个Note之后需要更改的数据表格
     private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER =
         "CREATE TRIGGER increase_folder_count_on_insert " +
         " AFTER INSERT ON " + TABLE.NOTE +
@@ -122,6 +129,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Decrease folder's note count when delete note from the folder
      */
+    // 在文件夹中删除一个Note之后需要更改的数据表格
     private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER =
         "CREATE TRIGGER decrease_folder_count_on_delete " +
         " AFTER DELETE ON " + TABLE.NOTE +
@@ -135,6 +143,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Update note's content when insert data with type {@link DataConstants#NOTE}
      */
+    // 在文件夹中对于一个Note导入新的数据之后需要更改的数据表格
     private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =
         "CREATE TRIGGER update_note_content_on_insert " +
         " AFTER INSERT ON " + TABLE.DATA +
@@ -148,6 +157,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Update note's content when data with {@link DataConstants#NOTE} type has changed
      */
+    // Note数据被更改后需要修改的数据表格
     private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =
         "CREATE TRIGGER update_note_content_on_update " +
         " AFTER UPDATE ON " + TABLE.DATA +
@@ -161,6 +171,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Update note's content when data with {@link DataConstants#NOTE} type has deleted
      */
+    // Note数据被删除后需要修改的数据表格
     private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =
         "CREATE TRIGGER update_note_content_on_delete " +
         " AFTER delete ON " + TABLE.DATA +
@@ -174,6 +185,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Delete datas belong to note which has been deleted
      */
+    // 删除已删除的Note数据后需要修改的数据表格
     private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =
         "CREATE TRIGGER delete_data_on_delete " +
         " AFTER DELETE ON " + TABLE.NOTE +
@@ -185,6 +197,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Delete notes belong to folder which has been deleted
      */
+    // 删除已删除的文件夹的Note后需要修改的数据表格
     private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =
         "CREATE TRIGGER folder_delete_notes_on_delete " +
         " AFTER DELETE ON " + TABLE.NOTE +
@@ -196,6 +209,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     /**
      * Move notes belong to folder which has been moved to trash folder
      */
+    // 还原垃圾桶中Note后需要更改的数据表格
     private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =
         "CREATE TRIGGER folder_move_notes_on_trash " +
         " AFTER UPDATE ON " + TABLE.NOTE +
@@ -206,10 +220,12 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
         "  WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
         " END";
 
+    // 构造函数，传入数据库的名称和版本
     public NotesDatabaseHelper(Context context) {
         super(context, DB_NAME, null, DB_VERSION);
     }
 
+    // 创建表格（用于存储标签属性）
     public void createNoteTable(SQLiteDatabase db) {
         db.execSQL(CREATE_NOTE_TABLE_SQL);
         reCreateNoteTableTriggers(db);
@@ -217,6 +233,10 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
         Log.d(TAG, "note table has been created");
     }
 
+    /*
+    execSQL是数据库操作的API，主要是更改行为的SQL语句
+    在这里主要是用于重新创建上述定义表格，先删除原有的数据库的触发器再重新创建新的数据库
+    */
     private void reCreateNoteTableTriggers(SQLiteDatabase db) {
         db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update");
         db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update");
@@ -235,6 +255,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
         db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
     }
 
+    // 创建系统文件夹
     private void createSystemFolder(SQLiteDatabase db) {
         ContentValues values = new ContentValues();
 
@@ -270,6 +291,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
         db.insert(TABLE.NOTE, null, values);
     }
 
+    // 创建表格（用于存储标签内容）
     public void createDataTable(SQLiteDatabase db) {
         db.execSQL(CREATE_DATA_TABLE_SQL);
         reCreateDataTableTriggers(db);
diff --git a/MiNote/app/src/main/java/net/micode/notes/ui/NotesListActivity.java b/MiNote/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
index 77a30b8..b1c77cc 100644
--- a/MiNote/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
+++ b/MiNote/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
@@ -81,6 +81,8 @@ import java.io.InputStreamReader;
 import java.util.HashSet;
 
 public class NotesListActivity extends AppCompatActivity implements OnClickListener, OnItemLongClickListener {
+//    首页界面切换
+    private int mode = 1;
     private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0;
 
     private static final int FOLDER_LIST_QUERY_TOKEN      = 1;
@@ -93,6 +95,8 @@ public class NotesListActivity extends AppCompatActivity implements OnClickListe
 
     private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction";
 
+    public static int secret_mode = 0;
+
     private enum ListEditState {
         NOTE_LIST, SUB_FOLDER, CALL_RECORD_FOLDER
     };
@@ -141,6 +145,7 @@ public class NotesListActivity extends AppCompatActivity implements OnClickListe
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.note_list);
+        getWindow().setBackgroundDrawableResource(R.drawable.flower);
         initResources();
 
         /**
@@ -413,10 +418,35 @@ public class NotesListActivity extends AppCompatActivity implements OnClickListe
     private void startAsyncNotesListQuery() {
         String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION
                 : NORMAL_SELECTION;
-        mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
-                Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] {
-                    String.valueOf(mCurrentFolderId)
-                }, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
+        if(secret_mode == 0) {
+            mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
+                    Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[]{
+                            String.valueOf(mCurrentFolderId)
+                    }, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
+        }
+        else{
+            String str1 = "11111";
+            String [] PROJECTION = new String [] {  //定义一个新的PROJECTION数组，只换掉SNIPPET
+                    NoteColumns.ID,
+                    NoteColumns.ALERTED_DATE,
+                    NoteColumns.BG_COLOR_ID,
+                    NoteColumns.CREATED_DATE,
+                    NoteColumns.HAS_ATTACHMENT,
+                    NoteColumns.MODIFIED_DATE,
+                    NoteColumns.NOTES_COUNT,
+                    NoteColumns.PARENT_ID,
+//                    NoteColumns.SNIPPET,
+                    str1,
+                    NoteColumns.TYPE,
+                    NoteColumns.WIDGET_ID,
+                    NoteColumns.WIDGET_TYPE,
+            };
+            mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
+                    Notes.CONTENT_NOTE_URI, PROJECTION, selection, new String[]{
+                            String.valueOf(mCurrentFolderId)
+                    }, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
+
+        }
     }
 
     private final class BackgroundQueryHandler extends AsyncQueryHandler {
@@ -765,8 +795,13 @@ public class NotesListActivity extends AppCompatActivity implements OnClickListe
     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
         menu.clear();
+
         if (mState == ListEditState.NOTE_LIST) {
             getMenuInflater().inflate(R.menu.note_list, menu);
+            if (secret_mode == 1)
+                menu.findItem(R.id.menu_secret).setVisible(false);
+            else
+                menu.findItem(R.id.menu_quit_secret).setVisible(false);
             // set sync or sync_cancel
             menu.findItem(R.id.menu_sync).setTitle(
                     GTaskSyncService.isSyncing() ? R.string.menu_sync_cancel : R.string.menu_sync);
@@ -777,6 +812,14 @@ public class NotesListActivity extends AppCompatActivity implements OnClickListe
         } else {
             Log.e(TAG, "Wrong state:" + mState);
         }
+
+        if (mode == 1) {
+            menu.findItem(R.id.menu_flower).setVisible(false);
+        } else if (mode == 0) {
+            menu.findItem(R.id.menu_saying).setVisible(false);
+        } else if (mode == -1) {
+            menu.findItem(R.id.menu_water).setVisible(false);
+        }
         return true;
     }
 
@@ -811,9 +854,75 @@ public class NotesListActivity extends AppCompatActivity implements OnClickListe
                 createNewNote();
                 break;
             }
-            case R.id.menu_search:
+            case R.id.menu_search: {
                 onSearchRequested();
                 break;
+            }
+            case R.id.menu_secret: {    //进入私密模式
+
+                AlertDialog.Builder dialog = new AlertDialog.Builder(NotesListActivity.this);
+                dialog.setTitle("重要提醒");
+                dialog.setMessage("您确认进入私密模式吗？");
+                dialog.setCancelable(false);
+                dialog.setPositiveButton("确认", new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        secret_mode = 1;
+                        startAsyncNotesListQuery();
+                        Toast.makeText(NotesListActivity.this,"您已进入私密模式",Toast.LENGTH_SHORT).show();
+                    }
+                });
+                dialog.setNegativeButton("取消", new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which){
+                        secret_mode = 0;
+                        startAsyncNotesListQuery();
+                    }
+                });
+                dialog.show();
+
+//                Toast.makeText(this,"您已进入私密模式",Toast.LENGTH_SHORT).show();
+                break;
+            }
+            case R.id.menu_quit_secret:{    //退出私密模式
+
+                AlertDialog.Builder dialog = new AlertDialog.Builder(NotesListActivity.this);
+                dialog.setTitle("重要提醒");
+                dialog.setMessage("您确认退出私密模式吗？");
+                dialog.setCancelable(false);
+                dialog.setPositiveButton("确认", new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        secret_mode = 0;
+                        startAsyncNotesListQuery();
+                        Toast.makeText(NotesListActivity.this,"您已退出私密模式",Toast.LENGTH_SHORT).show();
+                    }
+                });
+                dialog.setNegativeButton("取消", new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which){
+                        secret_mode = 1;
+                        startAsyncNotesListQuery();
+                    }
+                });
+                dialog.show();
+                break;
+            }
+            case R.id.menu_flower:{
+                mode = 1;
+                getWindow().setBackgroundDrawableResource(R.drawable.flower);
+                break;
+            }
+            case R.id.menu_saying:{
+                mode = 0;
+                getWindow().setBackgroundDrawableResource(R.drawable.mountain);
+                break;
+            }
+            case R.id.menu_water:{
+                mode = -1;
+                getWindow().setBackgroundDrawableResource(R.drawable.water);
+                break;
+            }
             default:
                 break;
         }
diff --git a/MiNote/app/src/main/res/drawable-hdpi/flower.jpg b/MiNote/app/src/main/res/drawable-hdpi/flower.jpg
new file mode 100644
index 0000000..7d9e3da
Binary files /dev/null and b/MiNote/app/src/main/res/drawable-hdpi/flower.jpg differ
diff --git a/MiNote/app/src/main/res/drawable-hdpi/mountain.jpg b/MiNote/app/src/main/res/drawable-hdpi/mountain.jpg
new file mode 100644
index 0000000..875a470
Binary files /dev/null and b/MiNote/app/src/main/res/drawable-hdpi/mountain.jpg differ
diff --git a/MiNote/app/src/main/res/drawable-hdpi/saying.jpg b/MiNote/app/src/main/res/drawable-hdpi/saying.jpg
new file mode 100644
index 0000000..1ec26af
Binary files /dev/null and b/MiNote/app/src/main/res/drawable-hdpi/saying.jpg differ
diff --git a/MiNote/app/src/main/res/drawable-hdpi/water.jpg b/MiNote/app/src/main/res/drawable-hdpi/water.jpg
new file mode 100644
index 0000000..75176ee
Binary files /dev/null and b/MiNote/app/src/main/res/drawable-hdpi/water.jpg differ
diff --git a/MiNote/app/src/main/res/layout/note_list.xml b/MiNote/app/src/main/res/layout/note_list.xml
index 6b25d38..23989cb 100644
--- a/MiNote/app/src/main/res/layout/note_list.xml
+++ b/MiNote/app/src/main/res/layout/note_list.xml
@@ -18,8 +18,8 @@
 <FrameLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
-    android:layout_height="fill_parent"
-    android:background="@drawable/list_background">
+    android:layout_height="fill_parent">
+<!--    android:background="@drawable/list_background">-->
 
     <LinearLayout
         android:layout_width="fill_parent"
diff --git a/MiNote/app/src/main/res/menu/note_list.xml b/MiNote/app/src/main/res/menu/note_list.xml
index 42ea736..41f8088 100644
--- a/MiNote/app/src/main/res/menu/note_list.xml
+++ b/MiNote/app/src/main/res/menu/note_list.xml
@@ -36,4 +36,24 @@
     <item
         android:id="@+id/menu_search"
         android:title="@string/menu_search"/>
+
+    <item
+        android:id="@+id/menu_flower"
+        android:title="@string/menu_flower"/>
+
+    <item
+        android:id="@+id/menu_saying"
+        android:title="@string/menu_saying"/>
+
+    <item
+        android:id="@+id/menu_water"
+        android:title="@string/menu_water"/>
+
+    <item
+        android:id="@+id/menu_secret"
+        android:title="@string/menu_secret"/>
+
+    <item
+        android:id="@+id/menu_quit_secret"
+        android:title="@string/menu_quit_secret"/>
 </menu>
diff --git a/MiNote/app/src/main/res/menu/sub_folder.xml b/MiNote/app/src/main/res/menu/sub_folder.xml
index b00de26..a6efc07 100644
--- a/MiNote/app/src/main/res/menu/sub_folder.xml
+++ b/MiNote/app/src/main/res/menu/sub_folder.xml
@@ -21,4 +21,12 @@
     <item
         android:id="@+id/menu_new_note"
         android:title="@string/notelist_menu_new"/>
+
+    <item
+        android:id="@+id/menu_secret"
+        android:title="@string/menu_secret"/>
+
+    <item
+        android:id="@+id/menu_quit_secret"
+        android:title="@string/menu_quit_secret"/>
 </menu>
\ No newline at end of file
diff --git a/MiNote/app/src/main/res/values-zh-rCN/strings.xml b/MiNote/app/src/main/res/values-zh-rCN/strings.xml
index 09f75ed..fcb02e5 100644
--- a/MiNote/app/src/main/res/values-zh-rCN/strings.xml
+++ b/MiNote/app/src/main/res/values-zh-rCN/strings.xml
@@ -36,6 +36,8 @@
     <string name="note_link_web">浏览网页</string>
     <string name="note_link_other">打开地图</string>
     <!-- note list string -->
+    <string name="menu_secret">私密模式</string>
+    <string name="menu_quit_secret">退出私密模式</string>
     <string name="menu_create_folder">新建文件夹</string>
     <string name="menu_export_text">导出文本</string>
     <string name="menu_sync">同步</string>
diff --git a/MiNote/app/src/main/res/values-zh-rTW/strings.xml b/MiNote/app/src/main/res/values-zh-rTW/strings.xml
index 3c41894..d0b5f7a 100644
--- a/MiNote/app/src/main/res/values-zh-rTW/strings.xml
+++ b/MiNote/app/src/main/res/values-zh-rTW/strings.xml
@@ -37,6 +37,8 @@
     <string name="note_link_other">打開地圖</string>
     <string name="format_move_notes_to_folder">已將所選 %1$d 便籤移到 %2$s 文件夾</string>
     <!-- note list string -->
+    <string name="menu_secret">私密模式</string>
+    <string name="menu_quit_secret">退出私密模式</string>
     <string name="menu_create_folder">新建文件夾</string>
     <string name="menu_export_text">導出文本</string>
     <string name="menu_sync">同步</string>
diff --git a/MiNote/app/src/main/res/values/strings.xml b/MiNote/app/src/main/res/values/strings.xml
index 55df868..55b1d4c 100644
--- a/MiNote/app/src/main/res/values/strings.xml
+++ b/MiNote/app/src/main/res/values/strings.xml
@@ -39,6 +39,11 @@
     <string name="file_path">/MIUI/notes/</string>
     <string name="file_name_txt_format">notes_%s.txt</string>
     <!-- notes list string -->
+    <string name="menu_flower">Background: Flower</string>
+    <string name="menu_saying">Background: Mountain</string>
+    <string name="menu_water">Background: Water</string>
+    <string name="menu_secret">secret model</string>
+    <string name="menu_quit_secret">quit secret model</string>
     <string name="format_folder_files_count">(%d)</string>
     <string name="menu_create_folder">New Folder</string>
     <string name="menu_export_text">Export text</string>
diff --git a/testfile b/testfile
deleted file mode 100644
index d8ce13e..0000000
--- a/testfile
+++ /dev/null
@@ -1 +0,0 @@
-Laotie666