diff --git a/MonitorControl.xcodeproj/project.pbxproj b/MonitorControl.xcodeproj/project.pbxproj
index 8628c06..99d1f8e 100644
--- a/MonitorControl.xcodeproj/project.pbxproj
+++ b/MonitorControl.xcodeproj/project.pbxproj
@@ -100,6 +100,9 @@
 		28D1DE0F227FD006004CB494 /* MediaKeyTap.framework.dSYM */ = {isa = PBXFileReference; lastKnownFileType = wrapper.dsym; name = MediaKeyTap.framework.dSYM; path = Carthage/Build/Mac/MediaKeyTap.framework.dSYM; sourceTree = "<group>"; };
 		28D1DE10227FD006004CB494 /* AMCoreAudio.framework.dSYM */ = {isa = PBXFileReference; lastKnownFileType = wrapper.dsym; name = AMCoreAudio.framework.dSYM; path = Carthage/Build/Mac/AMCoreAudio.framework.dSYM; sourceTree = "<group>"; };
 		28D1DE11227FD006004CB494 /* DDC.framework.dSYM */ = {isa = PBXFileReference; lastKnownFileType = wrapper.dsym; name = DDC.framework.dSYM; path = Carthage/Build/Mac/DDC.framework.dSYM; sourceTree = "<group>"; };
+		47A9F59F22ACAFBE00F649BB /* zh-Hans */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = "zh-Hans"; path = "zh-Hans.lproj/Main.strings"; sourceTree = "<group>"; };
+		47A9F5A022ACAFBE00F649BB /* zh-Hans */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = "zh-Hans"; path = "zh-Hans.lproj/MainMenu.strings"; sourceTree = "<group>"; };
+		47A9F5A122ACAFBE00F649BB /* zh-Hans */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = "zh-Hans"; path = "zh-Hans.lproj/Localizable.strings"; sourceTree = "<group>"; };
 		56754EAB1D9A4016007BCDC5 /* MonitorControl.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = MonitorControl.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		56754EAE1D9A4016007BCDC5 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; lineEnding = 0; path = AppDelegate.swift; sourceTree = "<group>"; };
 		56754EB01D9A4016007BCDC5 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
@@ -339,6 +342,7 @@
 				fr,
 				de,
 				uk,
+				"zh-Hans",
 			);
 			mainGroup = 56754EA21D9A4016007BCDC5;
 			productRefGroup = 56754EAC1D9A4016007BCDC5 /* Products */;
@@ -484,6 +488,7 @@
 				F01B0682228221B6008E64DB /* en */,
 				F01B0684228221B6008E64DB /* fr */,
 				1E7ECF3F22A4552400E4E701 /* uk */,
+				47A9F5A122ACAFBE00F649BB /* zh-Hans */,
 			);
 			name = Localizable.strings;
 			sourceTree = "<group>";
@@ -496,6 +501,7 @@
 				F01B06A522822215008E64DB /* en */,
 				F01B06A622822217008E64DB /* fr */,
 				1E7ECF4022A4552B00E4E701 /* uk */,
+				47A9F59F22ACAFBE00F649BB /* zh-Hans */,
 			);
 			name = Main.storyboard;
 			sourceTree = "<group>";
@@ -508,6 +514,7 @@
 				F01B06A222822208008E64DB /* en */,
 				F01B06A32282220A008E64DB /* fr */,
 				1E7ECF4122A4553000E4E701 /* uk */,
+				47A9F5A022ACAFBE00F649BB /* zh-Hans */,
 			);
 			name = MainMenu.xib;
 			sourceTree = "<group>";
diff --git a/MonitorControl/Support/zh-Hans.lproj/Localizable.strings b/MonitorControl/Support/zh-Hans.lproj/Localizable.strings
new file mode 100644
index 0000000..bfd018b
--- /dev/null
+++ b/MonitorControl/Support/zh-Hans.lproj/Localizable.strings
@@ -0,0 +1,50 @@
+
+/* Sown in menu */
+"Brightness" = "Brightness";
+
+/* Build */
+"Build" = "Build";
+
+/* Shown in menu */
+"Contrast" = "Contrast";
+
+/* Shown in menu */
+"Default" = "Default";
+
+/* No comment provided by engineer. */
+"Display" = "Display";
+
+/* Shown in the main prefs window */
+"General" = "General";
+
+/* Shown in the main prefs window */
+"Keys" = "Keys";
+
+/* Shown in menu */
+"No supported display found" = "No supported display found";
+
+/* Shown in the alert dialog */
+"Ok" = "Ok";
+
+/* Shown in Preferences window */
+"Preferences" = "Preferences";
+
+/* Shown in menu */
+"Set as default" = "Set as default";
+
+/* Shown in the alert dialog */
+"Shortcuts not available" = "Shortcuts not available";
+
+/* Unknown display name
+ Unknown model
+ Unknown vendor */
+"Unknown" = "Unknown";
+
+/* Version */
+"Version" = "Version";
+
+/* Shown in menu */
+"Volume" = "Volume";
+
+/* Shown in the alert dialog */
+"You need to enable MonitorControl in System Preferences > Security and Privacy > Accessibility for the keyboard shortcuts to work" = "You need to enable MonitorControl in System Preferences > Security and Privacy > Accessibility for the keyboard shortcuts to work";
diff --git a/MonitorControl/UI/Base.lproj/Main.storyboard b/MonitorControl/UI/Base.lproj/Main.storyboard
index 30afd92..3ee70ec 100644
--- a/MonitorControl/UI/Base.lproj/Main.storyboard
+++ b/MonitorControl/UI/Base.lproj/Main.storyboard
@@ -346,7 +346,7 @@
                                     <rect key="frame" x="-100" y="-100" width="358" height="16"/>
                                     <autoresizingMask key="autoresizingMask"/>
                                 </scroller>
-                                <scroller key="verticalScroller" hidden="YES" wantsLayer="YES" verticalHuggingPriority="750" doubleValue="1" horizontal="NO" id="HBR-36-UaL">
+                                <scroller key="verticalScroller" hidden="YES" wantsLayer="YES" verticalHuggingPriority="750" horizontal="NO" id="HBR-36-UaL">
                                     <rect key="frame" x="224" y="17" width="15" height="102"/>
                                     <autoresizingMask key="autoresizingMask"/>
                                 </scroller>
diff --git a/MonitorControl/UI/zh-Hans.lproj/Main.strings b/MonitorControl/UI/zh-Hans.lproj/Main.strings
new file mode 100644
index 0000000..21fb8ed
--- /dev/null
+++ b/MonitorControl/UI/zh-Hans.lproj/Main.strings
@@ -0,0 +1,87 @@
+
+/* Class = "NSButtonCell"; title = "Change Brightness/Volume for all screens"; ObjectID = "0Z7-PQ-Bl8"; */
+"0Z7-PQ-Bl8.title" = "调整所有显示器亮度/音量";
+
+/* Class = "NSTextFieldCell"; title = "Text Cell"; ObjectID = "2gr-xG-Byx"; */
+"2gr-xG-Byx.title" = "";
+
+/* Class = "NSTextFieldCell"; title = "Table View Cell"; ObjectID = "4or-hS-WeW"; */
+"4or-hS-WeW.title" = "";
+
+/* Class = "NSTableColumn"; headerCell.title = "Enabled"; ObjectID = "8U8-ec-Zbv"; */
+"8U8-ec-Zbv.headerCell.title" = "启用";
+
+/* Class = "NSTableColumn"; headerCell.title = "Name"; ObjectID = "CHc-s5-4MN"; */
+"CHc-s5-4MN.headerCell.title" = "名字";
+
+/* Class = "NSTextFieldCell"; title = "Table View Cell"; ObjectID = "DGv-iu-Jg1"; */
+"DGv-iu-Jg1.title" = "";
+
+/* Class = "NSTextFieldCell"; title = "Keys"; ObjectID = "Dcz-GG-1li"; */
+"Dcz-GG-1li.title" = "快捷键";
+
+/* Class = "NSTextFieldCell"; title = "General"; ObjectID = "ENU-js-huy"; */
+"ENU-js-huy.title" = "通用";
+
+/* Class = "NSTextFieldCell"; title = "Display"; ObjectID = "ExD-7P-6XI"; */
+"ExD-7P-6XI.title" = "显示器";
+
+/* Class = "NSTableColumn"; headerCell.title = "Vendor"; ObjectID = "LRJ-fb-Z9E"; */
+"LRJ-fb-Z9E.headerCell.title" = "Vendor";
+
+/* Class = "NSMenuItem"; title = "Volume only"; ObjectID = "NLP-dU-Dam"; */
+"NLP-dU-Dam.title" = "仅音量";
+
+/* Class = "NSTableColumn"; headerCell.title = "Model"; ObjectID = "Nvp-hI-w4x"; */
+"Nvp-hI-w4x.headerCell.title" = "Model";
+
+/* Class = "NSTextFieldCell"; title = "Table View Cell"; ObjectID = "Pkk-Ce-Y6Q"; */
+"Pkk-Ce-Y6Q.title" = "";
+
+/* Class = "NSTextFieldCell"; title = "Text Cell"; ObjectID = "VPD-MR-IXg"; */
+"VPD-MR-IXg.title" = "";
+
+/* Class = "NSTextFieldCell"; title = "Listen for"; ObjectID = "Vh8-06-U3K"; */
+"Vh8-06-U3K.title" = "通过快捷键调整屏幕";
+
+/* Class = "NSMenuItem"; title = "Both Brightness & Volume"; ObjectID = "Vr4-xb-B4o"; */
+"Vr4-xb-B4o.title" = "亮度和音量";
+
+/* Class = "NSTextFieldCell"; title = "Table View Cell"; ObjectID = "aSw-3H-uNa"; */
+"aSw-3H-uNa.title" = "";
+
+/* Class = "NSTextFieldCell"; title = "Text Cell"; ObjectID = "afl-95-ZJl"; */
+"afl-95-ZJl.title" = "";
+
+/* Class = "NSTextFieldCell"; title = "Text Cell"; ObjectID = "as0-t3-Aub"; */
+"as0-t3-Aub.title" = "";
+
+/* Class = "NSTextFieldCell"; title = "Table View Cell"; ObjectID = "cnb-Li-1lE"; */
+"cnb-Li-1lE.title" = "";
+
+/* Class = "NSTableColumn"; headerCell.title = "ID"; ObjectID = "dgp-q7-cBK"; */
+"dgp-q7-cBK.headerCell.title" = "ID";
+
+/* Class = "NSButtonCell"; title = "Lower Contrast after Brightness"; ObjectID = "fhy-Er-0aI"; */
+"fhy-Er-0aI.title" = "对比度与亮度同时降低";
+
+/* Class = "NSMenuItem"; title = "Brightness only"; ObjectID = "hjz-0c-rvK"; */
+"hjz-0c-rvK.title" = "仅亮度";
+
+/* Class = "NSButtonCell"; title = "Start MonitorControl at Login"; ObjectID = "j72-NF-zsW"; */
+"j72-NF-zsW.title" = "登录时运行 MonitorControl";
+
+/* Class = "NSTextFieldCell"; title = "Version 0.0.0 (Build 0)"; ObjectID = "mBs-6m-13Q"; */
+"mBs-6m-13Q.title" = "";
+
+/* Class = "NSTableColumn"; headerCell.title = "Friendly Name"; ObjectID = "uoI-1J-RdD"; */
+"uoI-1J-RdD.headerCell.title" = "自定义名";
+
+/* Class = "NSTextFieldCell"; title = "Text Cell"; ObjectID = "vkG-RF-Yne"; */
+"vkG-RF-Yne.title" = "";
+
+/* Class = "NSTableColumn"; headerCell.title = "DDC"; ObjectID = "xFw-if-3FU"; */
+"xFw-if-3FU.headerCell.title" = "DDC";
+
+/* Class = "NSButtonCell"; title = "Show a slider for contrast"; ObjectID = "xSI-8W-Xd0"; */
+"xSI-8W-Xd0.title" = "显示对比度滑动条";
diff --git a/MonitorControl/UI/zh-Hans.lproj/MainMenu.strings b/MonitorControl/UI/zh-Hans.lproj/MainMenu.strings
new file mode 100644
index 0000000..b26667e
--- /dev/null
+++ b/MonitorControl/UI/zh-Hans.lproj/MainMenu.strings
@@ -0,0 +1,6 @@
+
+/* Class = "NSMenuItem"; title = "Quit"; ObjectID = "JTa-2I-AsI"; */
+"JTa-2I-AsI.title" = "退出";
+
+/* Class = "NSMenuItem"; title = "Preferences..."; ObjectID = "SOS-eZ-uU5"; */
+"SOS-eZ-uU5.title" = "偏好设置...";