diff --git a/hallelujah.xcodeproj/project.pbxproj b/hallelujah.xcodeproj/project.pbxproj
index 95e81e7..80f3a0a 100644
--- a/hallelujah.xcodeproj/project.pbxproj
+++ b/hallelujah.xcodeproj/project.pbxproj
@@ -12,8 +12,6 @@
 		0DE74BFE1978EC6A00040F3C /* him.png in Resources */ = {isa = PBXBuildFile; fileRef = 0DE74BFD1978EC6A00040F3C /* him.png */; };
 		0DE74C001978F18E00040F3C /* him.icns in Resources */ = {isa = PBXBuildFile; fileRef = 0DE74BFF1978F18E00040F3C /* him.icns */; };
 		389468CB1F56A34A00EF1F5E /* web in Resources */ = {isa = PBXBuildFile; fileRef = 389468CA1F56A34A00EF1F5E /* web */; };
-		389468CD1F57BC4D00EF1F5E /* preferences.nib in Resources */ = {isa = PBXBuildFile; fileRef = 389468CC1F57BC4D00EF1F5E /* preferences.nib */; };
-		389468CF1F57BC5B00EF1F5E /* preferences.plist in Resources */ = {isa = PBXBuildFile; fileRef = 389468CE1F57BC5B00EF1F5E /* preferences.plist */; };
 		389468D61F57C8CE00EF1F5E /* InputApplicationDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = 389468D51F57C8CE00EF1F5E /* InputApplicationDelegate.m */; };
 		38DD401A1F5800A400A276CB /* PreferencesMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = 38DD40191F5800A400A276CB /* PreferencesMenu.xib */; };
 		56DAA2D1B676B02B33021777 /* libPods-hallelujah.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 83B7001F97014A6184CCEDD3 /* libPods-hallelujah.a */; };
@@ -42,8 +40,6 @@
 		29B97324FDCFA39411CA2CEA /* AppKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AppKit.framework; path = /System/Library/Frameworks/AppKit.framework; sourceTree = "<absolute>"; };
 		29B97325FDCFA39411CA2CEA /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = /System/Library/Frameworks/Foundation.framework; sourceTree = "<absolute>"; };
 		389468CA1F56A34A00EF1F5E /* web */ = {isa = PBXFileReference; lastKnownFileType = folder; path = web; sourceTree = "<group>"; };
-		389468CC1F57BC4D00EF1F5E /* preferences.nib */ = {isa = PBXFileReference; lastKnownFileType = wrapper.nib; path = preferences.nib; sourceTree = "<group>"; };
-		389468CE1F57BC5B00EF1F5E /* preferences.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = preferences.plist; sourceTree = "<group>"; };
 		389468D41F57C8CE00EF1F5E /* InputApplicationDelegate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = InputApplicationDelegate.h; path = src/InputApplicationDelegate.h; sourceTree = "<group>"; };
 		389468D51F57C8CE00EF1F5E /* InputApplicationDelegate.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = InputApplicationDelegate.m; path = src/InputApplicationDelegate.m; sourceTree = "<group>"; };
 		38DD40191F5800A400A276CB /* PreferencesMenu.xib */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.xib; path = PreferencesMenu.xib; sourceTree = "<group>"; };
@@ -133,9 +129,7 @@
 		29B97317FDCFA39411CA2CEA /* Resources */ = {
 			isa = PBXGroup;
 			children = (
-				389468CC1F57BC4D00EF1F5E /* preferences.nib */,
 				38DD40191F5800A400A276CB /* PreferencesMenu.xib */,
-				389468CE1F57BC5B00EF1F5E /* preferences.plist */,
 				389468CA1F56A34A00EF1F5E /* web */,
 				F102C5A71F48818A0005B03F /* words_with_frequency_and_translation.json */,
 				F102C5A51F487DE80005B03F /* google_227800_words.bin */,
@@ -240,9 +234,7 @@
 				0D2BFD8F194588F400DE18D9 /* Images.xcassets in Resources */,
 				38DD401A1F5800A400A276CB /* PreferencesMenu.xib in Resources */,
 				0DE74C001978F18E00040F3C /* him.icns in Resources */,
-				389468CF1F57BC5B00EF1F5E /* preferences.plist in Resources */,
 				8D11072B0486CEB800E47090 /* InfoPlist.strings in Resources */,
-				389468CD1F57BC4D00EF1F5E /* preferences.nib in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/hallelujah.xcworkspace/xcuserdata/yuwdong.xcuserdatad/UserInterfaceState.xcuserstate b/hallelujah.xcworkspace/xcuserdata/yuwdong.xcuserdatad/UserInterfaceState.xcuserstate
index 376dea4..77f56bc 100644
Binary files a/hallelujah.xcworkspace/xcuserdata/yuwdong.xcuserdatad/UserInterfaceState.xcuserstate and b/hallelujah.xcworkspace/xcuserdata/yuwdong.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/hallelujah.xcworkspace/xcuserdata/yuwdong.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist b/hallelujah.xcworkspace/xcuserdata/yuwdong.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
index 33a204c..b5e773c 100644
--- a/hallelujah.xcworkspace/xcuserdata/yuwdong.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
+++ b/hallelujah.xcworkspace/xcuserdata/yuwdong.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
@@ -10,11 +10,11 @@
             ignoreCount = "0"
             continueAfterRunningActions = "No"
             filePath = "src/main.mm"
-            timestampString = "527608760.655638"
+            timestampString = "527610592.721219"
             startingColumnNumber = "9223372036854775807"
             endingColumnNumber = "9223372036854775807"
-            startingLineNumber = "82"
-            endingLineNumber = "82"
+            startingLineNumber = "80"
+            endingLineNumber = "80"
             landmarkName = "startHttpServer()"
             landmarkType = "9">
          </BreakpointContent>
diff --git a/preferences.nib/designable.nib b/preferences.nib/designable.nib
deleted file mode 100644
index 9e9cb19..0000000
--- a/preferences.nib/designable.nib
+++ /dev/null
@@ -1,67 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none">
-    <dependencies>
-        <deployment version="101000" identifier="macosx"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="12121"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <objects>
-        <customObject id="-2" userLabel="File's Owner" customClass="NSWindowController">
-            <connections>
-                <outlet property="window" destination="5" id="46"/>
-            </connections>
-        </customObject>
-        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
-        <customObject id="-3" userLabel="Application"/>
-        <window title="Preferences" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" hidesOnDeactivate="YES" releasedWhenClosed="NO" visibleAtLaunch="NO" animationBehavior="default" id="5" userLabel="Window" customClass="NSPanel">
-            <windowStyleMask key="styleMask" titled="YES" closable="YES" utility="YES" nonactivatingPanel="YES"/>
-            <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
-            <rect key="contentRect" x="242" y="607" width="211" height="160"/>
-            <rect key="screenRect" x="0.0" y="0.0" width="1440" height="877"/>
-            <value key="minSize" type="size" width="213" height="113"/>
-            <view key="contentView" misplaced="YES" id="6">
-                <rect key="frame" x="0.0" y="0.0" width="211" height="160"/>
-                <autoresizingMask key="autoresizingMask"/>
-                <subviews>
-                    <button misplaced="YES" id="37">
-                        <rect key="frame" x="27" y="112" width="122" height="18"/>
-                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                        <buttonCell key="cell" type="check" title="show translation" bezelStyle="regularSquare" imagePosition="left" state="on" inset="2" id="38">
-                            <behavior key="behavior" changeContents="YES" doesNotDimImage="YES" lightByContents="YES"/>
-                            <font key="font" metaFont="system"/>
-                        </buttonCell>
-                    </button>
-                    <comboBox verticalHuggingPriority="750" misplaced="YES" allowsCharacterPickerTouchBarItem="NO" id="39">
-                        <rect key="frame" x="29" y="29" width="99" height="26"/>
-                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                        <comboBoxCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" borderStyle="bezel" drawsBackground="YES" completes="NO" numberOfVisibleItems="5" id="40">
-                            <font key="font" metaFont="system"/>
-                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
-                            <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
-                            <objectValues>
-                                <string>disable</string>
-                                <string>baidu</string>
-                                <string>google</string>
-                            </objectValues>
-                        </comboBoxCell>
-                    </comboBox>
-                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" misplaced="YES" allowsCharacterPickerTouchBarItem="NO" id="43">
-                        <rect key="frame" x="27" y="61" width="65" height="17"/>
-                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                        <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" title="Pinyin API" id="44">
-                            <font key="font" metaFont="system"/>
-                            <color key="textColor" name="labelColor" catalog="System" colorSpace="catalog"/>
-                            <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
-                        </textFieldCell>
-                    </textField>
-                    <box verticalHuggingPriority="750" misplaced="YES" boxType="separator" id="45">
-                        <rect key="frame" x="29" y="94" width="152" height="5"/>
-                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                    </box>
-                </subviews>
-            </view>
-            <point key="canvasLocation" x="140.5" y="188"/>
-        </window>
-        <userDefaultsController representsSharedInstance="YES" id="14" userLabel="Shared Defaults"/>
-    </objects>
-</document>
diff --git a/preferences.nib/keyedobjects.nib b/preferences.nib/keyedobjects.nib
deleted file mode 100644
index b28dc2e..0000000
Binary files a/preferences.nib/keyedobjects.nib and /dev/null differ
diff --git a/preferences.plist b/preferences.plist
deleted file mode 100644
index 8b7a9e6..0000000
--- a/preferences.plist
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>pinyinApi</key>
-	<array>
-		<string>disable</string>
-		<string>baidu</string>
-		<string>google</string>
-	</array>
-	<key>showTranslations</key>
-	<true/>
-</dict>
-</plist>
diff --git a/src/InputApplicationDelegate.m b/src/InputApplicationDelegate.m
index ae83153..74b6986 100644
--- a/src/InputApplicationDelegate.m
+++ b/src/InputApplicationDelegate.m
@@ -11,12 +11,11 @@ -(NSMenu*)menu
 
 -(void)awakeFromNib
 {
-	NSMenuItem*		preferences = [_menu itemWithTag:1];
+	NSMenuItem*		preferenceMenu = [_menu itemWithTag:1];
 	
-	if ( preferences ) {
-		[preferences setAction:@selector(showPreferences:)];
+	if ( preferenceMenu ) {
+		[preferenceMenu setAction:@selector(showPreferences:)];
 	}
-	
 }
 
 @end
diff --git a/src/InputController.mm b/src/InputController.mm
index d1bbbb1..71bdd8b 100644
--- a/src/InputController.mm
+++ b/src/InputController.mm
@@ -9,7 +9,7 @@
 extern NSMutableDictionary*     wordsWithFrequencyAndTranslation;
 extern BOOL                     defaultEnglishMode;
 extern NSDictionary*            substitutions;
-extern NSMutableDictionary*     preference;
+extern NSUserDefaults*          preference;
 
 typedef NSInteger KeyCode;
 static const KeyCode
@@ -327,14 +327,11 @@ - (void)candidateSelectionChanged:(NSAttributedString*) candidateString {
     
     _insertionIndex = [candidateString length];
     
-    bool showTranslations = [[NSUserDefaults standardUserDefaults] boolForKey: @"showTranslations"];
-    
-    NSArray* pinyinApi = [[NSUserDefaults standardUserDefaults] arrayForKey: @"showTranslations"];
-    
-    NSLog(@"showTranslations: %@, pinyinApi: %@", showTranslations, pinyinApi);
-
-    
-    [self showAnnotation: candidateString];
+    BOOL showTranslation = [preference boolForKey: @"showTranslation"];
+    NSLog(@"showTranslation: %hhd", showTranslation);
+    if (showTranslation) {
+        [self showAnnotation: candidateString];
+    }
 }
 
 - (void)candidateSelected:(NSAttributedString*)candidateString {
@@ -363,11 +360,14 @@ - (void)deactivateServer:(id)sender {
     [self reset];
 }
 
--(NSMenu*)menu
-{
+-(NSMenu*)menu {
     return [[NSApp delegate] performSelector:NSSelectorFromString(@"menu")];
 }
 
+- (void)showPreferences:(id)sender {
+    [[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString: @"http://localhost:62718/index.html"]];
+}
+
 
 -(void)showAnnotation:(NSAttributedString*)candidateString{
     NSArray* subList = [self getTranslations: candidateString];