diff --git a/src/DirOption.cs b/src/DirOption.cs
index a86564a..7504ca9 100644
--- a/src/DirOption.cs
+++ b/src/DirOption.cs
@@ -2,14 +2,13 @@ namespace Dot;
 
 public class DirOption : IOption
 {
-    [Option('f', "filter", HelpText = nameof(Strings.FileSearchPattern), Default = "*.*"
-          , ResourceType = typeof(Strings))]
+    [Option('f', "filter", HelpText = nameof(Str.FileSearchPattern), Default = "*.*", ResourceType = typeof(Str))]
     public string Filter { get; set; }
 
-    [Value(0, HelpText = nameof(Strings.FolderPath), Default = ".", ResourceType = typeof(Strings))]
+    [Value(0, HelpText = nameof(Str.FolderPath), Default = ".", ResourceType = typeof(Str))]
     public string Path { get; set; }
 
 
-    [Option('r', "readonly", HelpText = nameof(Strings.ReadOnly), Default = false, ResourceType = typeof(Strings))]
+    [Option('r', "readonly", HelpText = nameof(Str.ReadOnly), Default = false, ResourceType = typeof(Str))]
     public bool ReadOnly { get; set; }
 }
\ No newline at end of file
diff --git a/src/Guid/Main.cs b/src/Guid/Main.cs
index 0b157ce..8bf6cb3 100644
--- a/src/Guid/Main.cs
+++ b/src/Guid/Main.cs
@@ -7,11 +7,12 @@ public sealed class Main : Tool<Option>
     public Main(Option opt) : base(opt) { }
 
 
-    public override void Run()
+    public override Task Run()
     {
         var guid            = System.Guid.NewGuid().ToString();
         if (Opt.Upper) guid = guid.ToUpper();
         ClipboardService.SetText(guid);
-        Console.WriteLine(Strings.Copied, guid);
+        Console.WriteLine(Str.Copied, guid);
+        return Task.CompletedTask;
     }
 }
\ No newline at end of file
diff --git a/src/Guid/Option.cs b/src/Guid/Option.cs
index 44801e2..ecc826b 100644
--- a/src/Guid/Option.cs
+++ b/src/Guid/Option.cs
@@ -1,8 +1,8 @@
 namespace Dot.Guid;
 
-[Verb("guid", HelpText = nameof(Strings.GuidTool), ResourceType = typeof(Strings))]
+[Verb("guid", HelpText = nameof(Str.GuidTool), ResourceType = typeof(Str))]
 public class Option : IOption
 {
-    [Option('u', "upper", HelpText = nameof(Strings.UseUppercase), Default = false, ResourceType = typeof(Strings))]
+    [Option('u', "upper", HelpText = nameof(Str.UseUppercase), Default = false, ResourceType = typeof(Str))]
     public bool Upper { get; set; } //normal options here
 }
\ No newline at end of file
diff --git a/src/ITool.cs b/src/ITool.cs
index e74bec8..6437735 100644
--- a/src/ITool.cs
+++ b/src/ITool.cs
@@ -2,5 +2,5 @@ namespace Dot;
 
 public interface ITool
 {
-    void Run();
+    Task Run();
 }
\ No newline at end of file
diff --git a/src/Lang/Str.Designer.cs b/src/Lang/Str.Designer.cs
new file mode 100644
index 0000000..95267cc
--- /dev/null
+++ b/src/Lang/Str.Designer.cs
@@ -0,0 +1,341 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace Dot.Lang {
+    using System;
+    
+    
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    public class Str {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Str() {
+        }
+        
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        public static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if (object.ReferenceEquals(resourceMan, null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Dot.Lang.Str", typeof(Str).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        public static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 转换换行符为LF.
+        /// </summary>
+        public static string ConvertEndOfLineToLF {
+            get {
+                return ResourceManager.GetString("ConvertEndOfLineToLF", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to {0}（已复制到剪贴板）.
+        /// </summary>
+        public static string Copied {
+            get {
+                return ResourceManager.GetString("Copied", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 文件通配符.
+        /// </summary>
+        public static string FileSearchPattern {
+            get {
+                return ResourceManager.GetString("FileSearchPattern", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 要处理的目录路径.
+        /// </summary>
+        public static string FolderPath {
+            get {
+                return ResourceManager.GetString("FolderPath", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to GUID工具.
+        /// </summary>
+        public static string GuidTool {
+            get {
+                return ResourceManager.GetString("GuidTool", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 文本编码工具.
+        /// </summary>
+        public static string HelpForText {
+            get {
+                return ResourceManager.GetString("HelpForText", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 输入文本为空.
+        /// </summary>
+        public static string InputTextIsEmpty {
+            get {
+                return ResourceManager.GetString("InputTextIsEmpty", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Local clock offset.
+        /// </summary>
+        public static string LocalClockOffset {
+            get {
+                return ResourceManager.GetString("LocalClockOffset", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to {0}, 本机时钟偏移: {1} ms.
+        /// </summary>
+        public static string LocalTimeOffset {
+            get {
+                return ResourceManager.GetString("LocalTimeOffset", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 本机时间已同步.
+        /// </summary>
+        public static string LocalTimeSyncDone {
+            get {
+                return ResourceManager.GetString("LocalTimeSyncDone", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 没有需要处理的文件.
+        /// </summary>
+        public static string NoFileToBeProcessed {
+            get {
+                return ResourceManager.GetString("NoFileToBeProcessed", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to {0} 通信中....
+        /// </summary>
+        public static string NtpCalling {
+            get {
+                return ResourceManager.GetString("NtpCalling", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 成功 {0}/{1} , 本机时钟偏移平均值: {2} ms.
+        /// </summary>
+        public static string NtpReceiveDone {
+            get {
+                return ResourceManager.GetString("NtpReceiveDone", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to {0}/{1} 个 NTP 服务器.
+        /// </summary>
+        public static string NtpServerCount {
+            get {
+                return ResourceManager.GetString("NtpServerCount", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 指定的路径“{0}”不存在.
+        /// </summary>
+        public static string PathNotFound {
+            get {
+                return ResourceManager.GetString("PathNotFound", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 按下任意键继续....
+        /// </summary>
+        public static string PressAnyKey {
+            get {
+                return ResourceManager.GetString("PressAnyKey", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to BitSet 1：[0-9]，2：[a-z]，4：[A-Z]，8：[ascii.0x21-0x2F].
+        /// </summary>
+        public static string PwdGenerateTypes {
+            get {
+                return ResourceManager.GetString("PwdGenerateTypes", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 密码长度.
+        /// </summary>
+        public static string PwdLength {
+            get {
+                return ResourceManager.GetString("PwdLength", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 随机密码生成器.
+        /// </summary>
+        public static string RandomPasswordGenerator {
+            get {
+                return ResourceManager.GetString("RandomPasswordGenerator", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 只读模式（仅做测试，不实际修改）.
+        /// </summary>
+        public static string ReadOnly {
+            get {
+                return ResourceManager.GetString("ReadOnly", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 移除文件尾部换行和空格.
+        /// </summary>
+        public static string RemoveTrailingWhiteSpaces {
+            get {
+                return ResourceManager.GetString("RemoveTrailingWhiteSpaces", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 查找文件....
+        /// </summary>
+        public static string SearchingFile {
+            get {
+                return ResourceManager.GetString("SearchingFile", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to {0} 个文件.
+        /// </summary>
+        public static string SearchingFileOK {
+            get {
+                return ResourceManager.GetString("SearchingFileOK", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Server.
+        /// </summary>
+        public static string Server {
+            get {
+                return ResourceManager.GetString("Server", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 已读取：{0}/{1}，处理：{2}，跳过：{3}.
+        /// </summary>
+        public static string ShowMessageTemp {
+            get {
+                return ResourceManager.GetString("ShowMessageTemp", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Status.
+        /// </summary>
+        public static string Status {
+            get {
+                return ResourceManager.GetString("Status", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 同步本机时间.
+        /// </summary>
+        public static string SyncToLocalTime {
+            get {
+                return ResourceManager.GetString("SyncToLocalTime", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 要处理的文本（默认取取剪贴板值）.
+        /// </summary>
+        public static string TextTobeProcessed {
+            get {
+                return ResourceManager.GetString("TextTobeProcessed", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 连接NTP服务器超时时间 (毫秒).
+        /// </summary>
+        public static string TimeoutMillSecs {
+            get {
+                return ResourceManager.GetString("TimeoutMillSecs", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 移除文件的uf8 bom.
+        /// </summary>
+        public static string TrimUtf8Bom {
+            get {
+                return ResourceManager.GetString("TrimUtf8Bom", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to 使用大写输出.
+        /// </summary>
+        public static string UseUppercase {
+            get {
+                return ResourceManager.GetString("UseUppercase", resourceCulture);
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Lang/Str.en-US.resx b/src/Lang/Str.en-US.resx
new file mode 100644
index 0000000..2e54aea
--- /dev/null
+++ b/src/Lang/Str.en-US.resx
@@ -0,0 +1,116 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+    <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata"
+                id="root" xmlns="">
+        <xsd:element name="root" msdata:IsDataSet="true"></xsd:element>
+    </xsd:schema>
+    <resheader name="resmimetype">
+        <value>text/microsoft-resx</value>
+    </resheader>
+    <resheader name="version">
+        <value>1.3</value>
+    </resheader>
+    <resheader name="reader">
+        <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral,
+            PublicKeyToken=b77a5c561934e089
+        </value>
+    </resheader>
+    <resheader name="writer">
+        <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral,
+            PublicKeyToken=b77a5c561934e089
+        </value>
+    </resheader>
+    <data name="InputTextIsEmpty" xml:space="preserve">
+        <value>The input text is empty</value>
+    </data>
+    <data name="SearchingFile" xml:space="preserve">
+        <value>Find files...</value>
+    </data>
+    <data name="PathNotFound" xml:space="preserve">
+        <value>The specified path "{0}" does not exist</value>
+    </data>
+    <data name="SearchingFileOK" xml:space="preserve">
+        <value>Find files...OK</value>
+    </data>
+    <data name="ShowMessageTemp" xml:space="preserve">
+        <value>Read: {0}/{1}, processed: {2}, skipped: {3}</value>
+    </data>
+    <data name="HelpForText" xml:space="preserve">
+        <value>Text encoding tool</value>
+    </data>
+    <data name="Copied" xml:space="preserve">
+        <value>{0}(copied to clipboard)</value>
+    </data>
+    <data name="FileSearchPattern" xml:space="preserve">
+        <value>File wildcards</value>
+    </data>
+    <data name="FolderPath" xml:space="preserve">
+        <value>Directory path to be processed</value>
+    </data>
+    <data name="ConvertEndOfLineToLF" xml:space="preserve">
+        <value>Convert newline characters to LF</value>
+    </data>
+    <data name="GuidTool" xml:space="preserve">
+        <value>GUID tool</value>
+    </data>
+    <data name="UseUppercase" xml:space="preserve">
+        <value>Use uppercase output</value>
+    </data>
+    <data name="RandomPasswordGenerator" xml:space="preserve">
+        <value>Random password generator</value>
+    </data>
+    <data name="PwdLength" xml:space="preserve">
+        <value>Password length</value>
+    </data>
+    <data name="PwdGenerateTypes" xml:space="preserve">
+        <value>BitSet 1：[0-9]，2：[a-z]，4：[A-Z]，8：[ascii.0x21-0x2F]</value>
+    </data>
+    <data name="RemoveTrailingWhiteSpaces" xml:space="preserve">
+        <value>Remove line breaks and spaces at the end of the file</value>
+    </data>
+    <data name="TrimUtf8Bom" xml:space="preserve">
+        <value>Remove the uf8 bom of the file</value>
+    </data>
+    <data name="TextTobeProcessed" xml:space="preserve">
+        <value>Text to be processed (clipboard value is taken by default)</value>
+    </data>
+    <data name="PressAnyKey" xml:space="preserve">
+        <value>Press any key to continue...</value>
+    </data>
+    <data name="ReadOnly" xml:space="preserve">
+        <value>Read-only mode (only for testing, no actual modification)</value>
+    </data>
+    <data name="NoFileToBeProcessed" xml:space="preserve">
+        <value>No documents to be processed</value>
+    </data>
+    <data name="TimeoutMillSecs" xml:space="preserve">
+        <value>Timeout for connecting to the NTP server (milliseconds)</value>
+    </data>
+    <data name="SyncToLocalTime" xml:space="preserve">
+        <value>Synchronize local time</value>
+    </data>
+    <data name="NtpReceiveDone" xml:space="preserve">
+        <value>Success {0}/{1}, the average value of the clock offset of the machine:{2}ms</value>
+    </data>
+    <data name="NtpServerCount" xml:space="preserve">
+        <value>{0}/{1} NTP servers</value>
+    </data>
+    <data name="NtpCalling" xml:space="preserve">
+        <value>{0} In communication...</value>
+    </data>
+    <data name="LocalTimeOffset" xml:space="preserve">
+        <value>{0}, local clock offset: {1} ms</value>
+    </data>
+    <data name="LocalTimeSyncDone" xml:space="preserve">
+        <value>Local time has been synchronized</value>
+    </data>
+    <data name="Server" xml:space="preserve">
+        <value>Server</value>
+    </data>
+    <data name="Status" xml:space="preserve">
+        <value>Status</value>
+    </data>
+    <data name="LocalClockOffset" xml:space="preserve">
+        <value>Local clock offset</value>
+    </data>
+</root>
\ No newline at end of file
diff --git a/src/Lang/Str.resx b/src/Lang/Str.resx
new file mode 100644
index 0000000..fb99a7a
--- /dev/null
+++ b/src/Lang/Str.resx
@@ -0,0 +1,125 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<root>
+    <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata"
+                id="root"
+                xmlns="">
+        <xsd:element name="root" msdata:IsDataSet="true">
+
+        </xsd:element>
+    </xsd:schema>
+    <resheader name="resmimetype">
+        <value>text/microsoft-resx</value>
+    </resheader>
+    <resheader name="version">
+        <value>1.3</value>
+    </resheader>
+    <resheader name="reader">
+        <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral,
+            PublicKeyToken=b77a5c561934e089
+        </value>
+    </resheader>
+    <resheader name="writer">
+        <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral,
+            PublicKeyToken=b77a5c561934e089
+        </value>
+    </resheader>
+    <data name="InputTextIsEmpty" xml:space="preserve">
+        <value>输入文本为空</value>
+    </data>
+    <data name="SearchingFile" xml:space="preserve">
+        <value>查找文件...</value>
+    </data>
+    <data name="PathNotFound" xml:space="preserve">
+        <value>指定的路径“{0}”不存在</value>
+    </data>
+    <data name="SearchingFileOK" xml:space="preserve">
+        <value>{0} 个文件</value>
+    </data>
+    <data name="ShowMessageTemp" xml:space="preserve">
+        <value>已读取：{0}/{1}，处理：{2}，跳过：{3}</value>
+    </data>
+    <data name="HelpForText" xml:space="preserve">
+        <value>文本编码工具</value>
+    </data>
+    <data name="TextTobeProcessed" xml:space="preserve">
+        <value>要处理的文本（默认取取剪贴板值）</value>
+    </data>
+    <data name="Copied" xml:space="preserve">
+        <value>{0}（已复制到剪贴板）</value>
+    </data>
+    <data name="FileSearchPattern" xml:space="preserve">
+        <value>文件通配符</value>
+    </data>
+    <data name="TimeoutMillSecs" xml:space="preserve">
+        <value>连接NTP服务器超时时间 (毫秒)</value>
+    </data>
+    <data name="SyncToLocalTime" xml:space="preserve">
+        <value>同步本机时间</value>
+    </data>
+
+    <data name="FolderPath" xml:space="preserve">
+        <value>要处理的目录路径</value>
+    </data>
+    <data name="ConvertEndOfLineToLF" xml:space="preserve">
+        <value>转换换行符为LF</value>
+    </data>
+    <data name="GuidTool" xml:space="preserve">
+        <value>GUID工具</value>
+    </data>
+    <data name="UseUppercase" xml:space="preserve">
+        <value>使用大写输出</value>
+    </data>
+    <data name="RandomPasswordGenerator" xml:space="preserve">
+        <value>随机密码生成器</value>
+    </data>
+
+    <data name="PwdLength" xml:space="preserve">
+        <value>密码长度</value>
+    </data>
+
+
+    <data name="PwdGenerateTypes" xml:space="preserve">
+        <value>BitSet 1：[0-9]，2：[a-z]，4：[A-Z]，8：[ascii.0x21-0x2F]</value>
+    </data>
+
+    <data name="RemoveTrailingWhiteSpaces" xml:space="preserve">
+        <value>移除文件尾部换行和空格</value>
+    </data>
+    <data name="TrimUtf8Bom" xml:space="preserve">
+        <value>移除文件的uf8 bom</value>
+    </data>
+    <data name="PressAnyKey" xml:space="preserve">
+        <value>按下任意键继续...</value>
+    </data>
+    <data name="ReadOnly" xml:space="preserve">
+        <value>只读模式（仅做测试，不实际修改）</value>
+    </data>
+    <data name="NoFileToBeProcessed" xml:space="preserve">
+        <value>没有需要处理的文件</value>
+    </data>
+    <data name="NtpReceiveDone" xml:space="preserve">
+        <value>成功 {0}/{1} , 本机时钟偏移平均值: {2} ms</value>
+    </data>
+    <data name="NtpServerCount" xml:space="preserve">
+        <value>{0}/{1} 个 NTP 服务器</value>
+    </data>
+    <data name="NtpCalling" xml:space="preserve">
+        <value>{0} 通信中...</value>
+    </data>
+    <data name="LocalTimeOffset" xml:space="preserve">
+        <value>{0}, 本机时钟偏移: {1} ms</value>
+    </data>
+    <data name="LocalTimeSyncDone" xml:space="preserve">
+        <value>本机时间已同步</value>
+    </data>
+    <data name="Server" xml:space="preserve">
+        <value>Server</value>
+    </data>
+    <data name="Status" xml:space="preserve">
+        <value>Status</value>
+    </data>
+    <data name="LocalClockOffset" xml:space="preserve">
+        <value>Local clock offset</value>
+    </data>
+</root>
\ No newline at end of file
diff --git a/src/Program.cs b/src/Program.cs
index 67a92de..19e2623 100644
--- a/src/Program.cs
+++ b/src/Program.cs
@@ -10,10 +10,10 @@ Type[] LoadVerbs()
 }
 
 
-void Run(object args)
+async Task Run(object args)
 {
     var tool = ToolsFactory.Create(args as IOption);
-    tool.Run();
+    await tool.Run();
 }
 
 
@@ -22,7 +22,7 @@ void Run(object args)
 var types = LoadVerbs();
 
 try {
-    Parser.Default.ParseArguments(args, types).WithParsed(Run);
+    await Parser.Default.ParseArguments(args, types).WithParsedAsync(Run);
 }
 catch (ArgumentException ex) {
     Console.Error.WriteLine(ex.Message);
diff --git a/src/Pwd/Main.cs b/src/Pwd/Main.cs
index 7cdf363..03d138c 100644
--- a/src/Pwd/Main.cs
+++ b/src/Pwd/Main.cs
@@ -15,7 +15,7 @@ public sealed class Main : Tool<Option>
 
     public Main(Option opt) : base(opt) { }
 
-    public override void Run()
+    public override Task Run()
     {
         unsafe {
             var pSource   = stackalloc char[_charTable.Sum(x => x.Length)];
@@ -47,7 +47,9 @@ public sealed class Main : Tool<Option>
 
             var result = new string(pDest, 0, Opt.Length);
             ClipboardService.SetText(result);
-            Console.WriteLine(Strings.Copied, result);
+            Console.WriteLine(Str.Copied, result);
         }
+
+        return Task.CompletedTask;
     }
 }
\ No newline at end of file
diff --git a/src/Pwd/Option.cs b/src/Pwd/Option.cs
index 80f9558..7e205e5 100644
--- a/src/Pwd/Option.cs
+++ b/src/Pwd/Option.cs
@@ -1,6 +1,6 @@
 namespace Dot.Pwd;
 
-[Verb("pwd", HelpText = nameof(Strings.RandomPasswordGenerator), ResourceType = typeof(Strings))]
+[Verb("pwd", HelpText = nameof(Str.RandomPasswordGenerator), ResourceType = typeof(Str))]
 public class Option : IOption
 {
     [Flags]
@@ -12,10 +12,10 @@ public class Option : IOption
       , SpecialCharacter = 8
     }
 
-    [Value(1, Required = true, HelpText = nameof(Strings.PwdLength), ResourceType = typeof(Strings))]
+    [Value(1, Required = true, HelpText = nameof(Str.PwdLength), ResourceType = typeof(Str))]
     public int Length { get; set; }
 
 
-    [Value(0, Required = true, HelpText = nameof(Strings.PwdGenerateTypes), ResourceType = typeof(Strings))]
+    [Value(0, Required = true, HelpText = nameof(Str.PwdGenerateTypes), ResourceType = typeof(Str))]
     public GenerateTypes Type { get; set; }
 }
\ No newline at end of file
diff --git a/src/Random/Main.cs b/src/Random/Main.cs
deleted file mode 100644
index ef55cda..0000000
--- a/src/Random/Main.cs
+++ /dev/null
@@ -1,66 +0,0 @@
-using System.Text.RegularExpressions;
-using NSExt.Extensions;
-using TextCopy;
-
-namespace Dot.Random;
-
-public sealed partial class Main : Tool<Option>
-{
-    private readonly char[][] _charTable = {
-                                               "0123456789".ToCharArray() //
-                                             , "abcdefghijklmnopqrstuvwxyz".ToCharArray()
-                                             , "ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray()
-                                             , "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~".ToCharArray()
-                                           };
-
-
-    public Main(Option opt) : base(opt) { }
-
-    [GeneratedRegex("[a-z]")]
-    private static partial Regex RegexLowerCaseLetter();
-
-    [GeneratedRegex("\\d")]
-    private static partial Regex RegexNumber();
-
-    [GeneratedRegex("[^\\da-zA-Z]")]
-    private static partial Regex RegexSpecialCharacter();
-
-    [GeneratedRegex("[A-Z]")]
-    private static partial Regex RegexUpperCaseLetter();
-
-    public override void Run()
-    {
-        unsafe {
-            var pSource   = stackalloc char[_charTable.Sum(x => x.Length)];
-            var pDest     = stackalloc char[Opt.Length];
-            var sourceLen = 0;
-
-            if (Opt.Type.HasFlag(Option.GenerateTypes.Number))
-                foreach (var c in _charTable[0])
-                    *(pSource + sourceLen++) = c;
-
-
-            if (Opt.Type.HasFlag(Option.GenerateTypes.LowerCaseLetter))
-                foreach (var c in _charTable[1])
-                    *(pSource + sourceLen++) = c;
-
-            if (Opt.Type.HasFlag(Option.GenerateTypes.UpperCaseLetter))
-                foreach (var c in _charTable[2])
-                    *(pSource + sourceLen++) = c;
-
-
-            if (Opt.Type.HasFlag(Option.GenerateTypes.SpecialCharacter))
-                foreach (var c in _charTable[3])
-                    *(pSource + sourceLen++) = c;
-
-
-            var randScope = new[] { 0, sourceLen };
-            for (var i = 0; i != Opt.Length; ++i) //
-                *(pDest + i) = *(pSource + randScope.Rand());
-
-            var result = new string(pDest, 0, Opt.Length);
-            ClipboardService.SetText(result);
-            Console.WriteLine($"已复制到剪贴板：{result}");
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/Random/Option.cs b/src/Random/Option.cs
deleted file mode 100644
index a1a524f..0000000
--- a/src/Random/Option.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-namespace Dot.Random;
-
-[Verb("rand", HelpText = "随机数生成器")]
-public class Option : IOption
-{
-    [Flags]
-    public enum GenerateTypes
-    {
-        Number           = 1
-      , LowerCaseLetter  = 2
-      , UpperCaseLetter  = 4
-      , SpecialCharacter = 8
-    }
-
-    [Value(1, MetaName = "长度", Required = true, HelpText = "随机数字长度")]
-    public int Length { get; set; }
-
-
-    [Value(0, MetaName = "生成类型", Required = true, HelpText = "BitSet 1：[0-9]，2：[a-z]，4：[A-Z]，8：[ascii.0x21-0x2F]")]
-    public GenerateTypes Type { get; set; }
-}
\ No newline at end of file
diff --git a/src/RmBlank/Main.cs b/src/RmBlank/Main.cs
index d1af5bc..0780dcd 100644
--- a/src/RmBlank/Main.cs
+++ b/src/RmBlank/Main.cs
@@ -27,13 +27,13 @@ public sealed class Main : Tool<Option>, IDisposable
         _disposed = true;
     }
 
-    private void FileHandle(string file)
+    private async ValueTask FileHandle(string file, CancellationToken _)
     {
         _step2Bar.Tick();
         ShowMessage(1, 0, 0);
         var spacesCnt = 0;
 
-        using var fsrw = OpenFileStream(file, FileMode.Open, FileAccess.ReadWrite);
+        await using var fsrw = OpenFileStream(file, FileMode.Open, FileAccess.ReadWrite);
 
         if (Opt.ReadOnly) { //测试，只读模式
             ShowMessage(0, 1, 0);
@@ -77,7 +77,7 @@ public sealed class Main : Tool<Option>, IDisposable
             _procedCnt        += procedCnt;
             _replaceCnt       += removeCnt;
             _breakCnt         += breakCnt;
-            _step2Bar.Message =  string.Format(Strings.ShowMessageTemp, _procedCnt, _totalCnt, _replaceCnt, _breakCnt);
+            _step2Bar.Message =  string.Format(Str.ShowMessageTemp, _procedCnt, _totalCnt, _replaceCnt, _breakCnt);
         }
     }
 
@@ -89,25 +89,25 @@ public sealed class Main : Tool<Option>, IDisposable
 
     /// <inheritdoc />
     [SuppressMessage("ReSharper", "PossibleMultipleEnumeration")]
-    public override void Run()
+    public override async Task Run()
     {
         if (!Directory.Exists(Opt.Path))
-            throw new ArgumentException(nameof(Opt.Path), string.Format(Strings.PathNotFound, Opt.Path));
+            throw new ArgumentException(nameof(Opt.Path), string.Format(Str.PathNotFound, Opt.Path));
 
 
-        using var step1Bar = new IndeterminateProgressBar(Strings.SearchingFile, DefaultProgressBarOptions);
+        using var step1Bar = new IndeterminateProgressBar(Str.SearchingFile, DefaultProgressBarOptions);
 
 
         var fileList = EnumerateFiles(Opt.Path, Opt.Filter);
         _totalCnt = fileList.Count();
 
-        step1Bar.Message = string.Format(Strings.SearchingFileOK, _totalCnt);
+        step1Bar.Message = string.Format(Str.SearchingFileOK, _totalCnt);
         step1Bar.Finished();
         if (_totalCnt == 0) return;
 
 
         _step2Bar = step1Bar.Spawn(_totalCnt, string.Empty, DefaultProgressBarOptions);
 
-        Parallel.ForEach(fileList, FileHandle);
+        await Parallel.ForEachAsync(fileList, FileHandle);
     }
 }
\ No newline at end of file
diff --git a/src/RmBlank/Option.cs b/src/RmBlank/Option.cs
index e9523d9..4eda764 100644
--- a/src/RmBlank/Option.cs
+++ b/src/RmBlank/Option.cs
@@ -1,4 +1,4 @@
 namespace Dot.RmBlank;
 
-[Verb("rm-blank", HelpText = nameof(Strings.RemoveTrailingWhiteSpaces), ResourceType = typeof(Strings))]
+[Verb("rm-blank", HelpText = nameof(Str.RemoveTrailingWhiteSpaces), ResourceType = typeof(Str))]
 public class Option : DirOption { }
\ No newline at end of file
diff --git a/src/RmBom/Main.cs b/src/RmBom/Main.cs
index c38a003..155867e 100644
--- a/src/RmBom/Main.cs
+++ b/src/RmBom/Main.cs
@@ -11,6 +11,7 @@ public sealed class Main : Tool<Option>, IDisposable
     private                 ChildProgressBar _step2Bar;
     private                 int              _totalCnt;
     private                 int              _trimCnt;
+    private readonly        byte[]           _utf8Bom = { 0xef, 0xbb, 0xbf };
     public Main(Option opt) : base(opt) { }
 
 
@@ -19,6 +20,17 @@ public sealed class Main : Tool<Option>, IDisposable
         Dispose(false);
     }
 
+    private bool CreateTempFile(Stream fsr, string tmpFile)
+    {
+        Span<byte> buffer  = stackalloc byte[_utf8Bom.Length];
+        var        readLen = fsr.Read(buffer);
+        if (readLen != _utf8Bom.Length || !buffer.SequenceEqual(_utf8Bom)) return false;
+        using var fsw = OpenFileStream(tmpFile, FileMode.OpenOrCreate, FileAccess.Write);
+        int       data;
+        while ((data = fsr.ReadByte()) != -1) fsw.WriteByte((byte)data);
+        return true;
+    }
+
     private void Dispose(bool disposing)
     {
         if (_disposed) return;
@@ -26,6 +38,37 @@ public sealed class Main : Tool<Option>, IDisposable
         _disposed = true;
     }
 
+    private async ValueTask FileHandle(string file, CancellationToken _)
+    {
+        _step2Bar.Tick();
+        ShowMessage(1, 0, 0);
+
+        var  tmpFile = $"{file}.tmp";
+        bool isReplaced;
+        await using (var fsr = OpenFileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
+            if (Opt.ReadOnly) { //测试，只读模式
+                ShowMessage(0, 1, 0);
+                return;
+            }
+
+            if (fsr is null) {
+                ShowMessage(0, 0, 1);
+                return;
+            }
+
+
+            isReplaced = CreateTempFile(fsr, tmpFile);
+        }
+
+        if (isReplaced) {
+            MoveFile(tmpFile, file);
+            ShowMessage(0, 1, 0);
+        }
+        else {
+            ShowMessage(0, 0, 1);
+        }
+    }
+
 
     private void ShowMessage(int procedCnt, int replaceCnt, int breakCnt)
     {
@@ -33,7 +76,7 @@ public sealed class Main : Tool<Option>, IDisposable
             _procedCnt        += procedCnt;
             _trimCnt          += replaceCnt;
             _breakCnt         += breakCnt;
-            _step2Bar.Message =  string.Format(Strings.ShowMessageTemp, _procedCnt, _totalCnt, _trimCnt, _breakCnt);
+            _step2Bar.Message =  string.Format(Str.ShowMessageTemp, _procedCnt, _totalCnt, _trimCnt, _breakCnt);
         }
     }
 
@@ -44,60 +87,24 @@ public sealed class Main : Tool<Option>, IDisposable
     }
 
     [SuppressMessage("ReSharper", "PossibleMultipleEnumeration")]
-    public override void Run()
+    public override async Task Run()
     {
         if (!Directory.Exists(Opt.Path))
-            throw new ArgumentException(nameof(Opt.Path), string.Format(Strings.PathNotFound, Opt.Path));
+            throw new ArgumentException(nameof(Opt.Path), string.Format(Str.PathNotFound, Opt.Path));
 
 
-        var       utf8Bom  = new byte[] { 0xef, 0xbb, 0xbf };
-        using var step1Bar = new IndeterminateProgressBar(Strings.SearchingFile, DefaultProgressBarOptions);
+        using var step1Bar = new IndeterminateProgressBar(Str.SearchingFile, DefaultProgressBarOptions);
 
 
         var fileList = EnumerateFiles(Opt.Path, Opt.Filter);
         _totalCnt = fileList.Count();
 
-        step1Bar.Message = string.Format(Strings.SearchingFileOK, _totalCnt);
+        step1Bar.Message = string.Format(Str.SearchingFileOK, _totalCnt);
         step1Bar.Finished();
         if (_totalCnt == 0) return;
 
         _step2Bar = step1Bar.Spawn(_totalCnt, string.Empty, DefaultProgressBarOptions);
 
-        Parallel.ForEach(fileList, file => {
-            _step2Bar.Tick();
-            ShowMessage(1, 0, 0);
-
-            var tmpFile    = $"{file}.tmp";
-            var isReplaced = false;
-            using (var fsr = OpenFileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
-                if (Opt.ReadOnly) { //测试，只读模式
-                    ShowMessage(0, 1, 0);
-                    return;
-                }
-
-                if (fsr is null) {
-                    ShowMessage(0, 0, 1);
-                    return;
-                }
-
-
-                Span<byte> buffer  = stackalloc byte[utf8Bom.Length];
-                var        readLen = fsr.Read(buffer);
-                if (readLen == utf8Bom.Length && buffer.SequenceEqual(utf8Bom)) {
-                    using var fsw = OpenFileStream(tmpFile, FileMode.OpenOrCreate, FileAccess.Write);
-                    int       data;
-                    while ((data = fsr.ReadByte()) != -1) fsw.WriteByte((byte)data);
-                    isReplaced = true;
-                }
-            }
-
-            if (isReplaced) {
-                MoveFile(tmpFile, file);
-                ShowMessage(0, 1, 0);
-            }
-            else {
-                ShowMessage(0, 0, 1);
-            }
-        });
+        await Parallel.ForEachAsync(fileList, FileHandle);
     }
 }
\ No newline at end of file
diff --git a/src/RmBom/Option.cs b/src/RmBom/Option.cs
index 579a772..0a813fc 100644
--- a/src/RmBom/Option.cs
+++ b/src/RmBom/Option.cs
@@ -1,4 +1,4 @@
 namespace Dot.RmBom;
 
-[Verb("rm-bom", HelpText = nameof(Strings.TrimUtf8Bom), ResourceType = typeof(Strings))]
+[Verb("rm-bom", HelpText = nameof(Str.TrimUtf8Bom), ResourceType = typeof(Str))]
 public class Option : DirOption { }
\ No newline at end of file
diff --git a/src/Text/Main.cs b/src/Text/Main.cs
index f083935..776226c 100644
--- a/src/Text/Main.cs
+++ b/src/Text/Main.cs
@@ -25,11 +25,7 @@ public sealed class Main : Tool<Option>
         public ReadOnlySpan<char> UrlEncode;
     }
 
-    public Main(Option opt) : base(opt)
-    {
-        if (Opt.Text.NullOrEmpty()) Opt.Text = ClipboardService.GetText();
-        if (Opt.Text.NullOrEmpty()) throw new ArgumentException(Strings.InputTextIsEmpty);
-    }
+    public Main(Option opt) : base(opt) { }
 
     private static Output BuildOutput(string text, Encoding enc)
     {
@@ -68,6 +64,22 @@ public sealed class Main : Tool<Option>
         return ret;
     }
 
+    private static void ParseAndShow(string text)
+    {
+        Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+
+        var ansi                = BuildOutput(text, Encoding.GetEncoding("gbk"));
+        var utf8                = BuildOutput(text, Encoding.UTF8);
+        var unicodeLittleEndian = BuildOutput(text, Encoding.Unicode);
+        var unicodeBigEndian    = BuildOutput(text, Encoding.BigEndianUnicode);
+
+
+        PrintOutput(ansi);
+        PrintOutput(utf8);
+        PrintOutput(unicodeLittleEndian);
+        PrintOutput(unicodeBigEndian);
+    }
+
     private static void PrintOutput(Output o)
     {
         var outputTemp = $"""
@@ -89,20 +101,14 @@ html-decode:       {o.HtmlDecode}
         Console.WriteLine(outputTemp);
     }
 
-    public override void Run()
+    public override async Task Run()
     {
-        Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
-        var ansi                = BuildOutput(Opt.Text, Encoding.GetEncoding("gbk"));
-        var utf8                = BuildOutput(Opt.Text, Encoding.UTF8);
-        var unicodeLittleEndian = BuildOutput(Opt.Text, Encoding.Unicode);
-        var unicodeBigEndian    = BuildOutput(Opt.Text, Encoding.BigEndianUnicode);
+        if (Opt.Text.NullOrEmpty()) Opt.Text = await ClipboardService.GetTextAsync();
+        if (Opt.Text.NullOrEmpty()) throw new ArgumentException(Str.InputTextIsEmpty);
 
 
-        PrintOutput(ansi);
-        PrintOutput(utf8);
-        PrintOutput(unicodeLittleEndian);
-        PrintOutput(unicodeBigEndian);
-        Console.Write(Strings.PressAnyKey);
+        ParseAndShow(Opt.Text);
+        Console.Write(Str.PressAnyKey);
         Console.ReadKey();
     }
 }
\ No newline at end of file
diff --git a/src/Text/Option.cs b/src/Text/Option.cs
index 17af8ac..58018ff 100644
--- a/src/Text/Option.cs
+++ b/src/Text/Option.cs
@@ -1,8 +1,8 @@
 namespace Dot.Text;
 
-[Verb("text", HelpText = nameof(Strings.HelpForText), ResourceType = typeof(Strings))]
+[Verb("text", HelpText = nameof(Str.HelpForText), ResourceType = typeof(Str))]
 public class Option : IOption
 {
-    [Value(0, HelpText = nameof(Strings.TextTobeProcessed), ResourceType = typeof(Strings))]
+    [Value(0, HelpText = nameof(Str.TextTobeProcessed), ResourceType = typeof(Str))]
     public string Text { get; set; }
 }
\ No newline at end of file
diff --git a/src/Time/Main.cs b/src/Time/Main.cs
new file mode 100644
index 0000000..f2c5dec
--- /dev/null
+++ b/src/Time/Main.cs
@@ -0,0 +1,194 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Net.Sockets;
+using System.Runtime.InteropServices;
+
+namespace Dot.Time;
+
+public sealed class Main : Tool<Option>
+{
+    private enum ServerStatues : byte
+    {
+        Ready
+      , Connecting
+      , Succeed
+      , Failed
+    }
+
+    [StructLayout(LayoutKind.Explicit)]
+    private ref struct Systemtime
+    {
+        [FieldOffset(6)]  public ushort wDay;
+        [FieldOffset(4)]  public ushort wDayOfWeek;
+        [FieldOffset(8)]  public ushort wHour;
+        [FieldOffset(14)] public ushort wMilliseconds;
+        [FieldOffset(10)] public ushort wMinute;
+        [FieldOffset(2)]  public ushort wMonth;
+        [FieldOffset(12)] public ushort wSecond;
+        [FieldOffset(0)]  public ushort wYear;
+    }
+
+    private const    int    _MAX_DEGREE_OF_PARALLELISM = 10;
+    private const    int    _NTP_PORT                  = 123;
+    private readonly char[] _loading                   = { '-', '\\', '|', '/' };
+    private          int    _procedCnt;
+    private readonly int    _serverCnt;
+
+    private readonly Dictionary<string, Server> _serverDictionary;
+
+
+    private readonly string[] _serverDomains = {
+                                                   "ntp.ntsc.ac.cn", "cn.ntp.org.cn", "edu.ntp.org.cn"
+                                                 , "cn.pool.ntp.org", "time.pool.aliyun.com", "time1.aliyun.com"
+                                                 , "time2.aliyun.com", "time3.aliyun.com", "time4.aliyun.com"
+                                                 , "time5.aliyun.com", "time6.aliyun.com", "time7.aliyun.com"
+                                                 , "time1.cloud.tencent.com", "time2.cloud.tencent.com"
+                                                 , "time3.cloud.tencent.com", "time4.cloud.tencent.com"
+                                                 , "time5.cloud.tencent.com", "ntp.sjtu.edu.cn", "ntp.neu.edu.cn"
+                                                 , "ntp.bupt.edu.cn", "ntp.shu.edu.cn", "pool.ntp.org", "0.pool.ntp.org"
+                                                 , "1.pool.ntp.org", "2.pool.ntp.org", "3.pool.ntp.org"
+                                                 , "asia.pool.ntp.org", "time1.google.com", "time2.google.com"
+                                                 , "time3.google.com", "time4.google.com", "time.apple.com"
+                                                 , "time1.apple.com", "time2.apple.com", "time3.apple.com"
+                                                 , "time4.apple.com", "time5.apple.com", "time6.apple.com"
+                                                 , "time7.apple.com", "time.windows.com", "time.nist.gov"
+                                                 , "time-nw.nist.gov", "time-a.nist.gov", "time-b.nist.gov"
+                                                 , "stdtime.gov.hk"
+                                               };
+
+    private int _successCnt;
+
+
+    public Main(Option opt) : base(opt)
+    {
+        _serverCnt        = _serverDomains.Length;
+        _serverDictionary = _serverDomains.ToDictionary(x => x, _ => new Server { Status = ServerStatues.Ready });
+    }
+
+
+    private TimeSpan GetNtpOffset(string server)
+    {
+        Span<byte> ntpData = stackalloc byte[48];
+        ntpData[0] = 0x1B;
+        using var socket
+            = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp) {
+                  ReceiveTimeout = Opt.Timeout
+              };
+
+
+        try {
+            socket.Connect(server, _NTP_PORT);
+            socket.Send(ntpData);
+            var timeBefore = DateTime.Now;
+            socket.Receive(ntpData);
+            var transferTime = DateTime.Now - timeBefore;
+
+            var intPart = ((ulong)ntpData[40]   << 24) //
+                          | ((ulong)ntpData[41] << 16) //
+                          | ((ulong)ntpData[42] << 8)  //
+                          | ntpData[43];
+            var fractPart = ((ulong)ntpData[44]   << 24) //
+                            | ((ulong)ntpData[45] << 16) //
+                            | ((ulong)ntpData[46] << 8)  //
+                            | ntpData[47];
+            var from1900Ms = intPart * 1000 + fractPart * 1000 / 0x100000000L;
+            var onlineTime = new DateTime(1900, 1, 1).AddMilliseconds((long)from1900Ms) + transferTime / 2;
+            return DateTime.UtcNow - onlineTime;
+        }
+        catch (Exception) {
+            return TimeSpan.Zero;
+        }
+        finally {
+            socket.Close();
+        }
+    }
+
+    private async void Printing()
+    {
+        const string outputTemp = "{0,-30}\t{1}\t{2,20}\t{3,20}";
+        var          rolling    = 0;
+
+        Console.Clear();
+        while (true) {
+            await Task.Delay(100);
+            Console.SetCursorPosition(0, 0);
+            var row =                      //
+                _serverDictionary.Select(x //
+                                             => string.Format(outputTemp, x.Key
+                                                            , x.Value.Status == ServerStatues.Connecting
+                                                                  ? _loading[++rolling % 4]
+                                                                  : ' ', x.Value.Status
+                                                            , x.Value.Offset == TimeSpan.Zero
+                                                                  ? string.Empty
+                                                                  : x.Value.Offset));
+
+
+            Console.WriteLine(outputTemp, Str.Server, ' ', Str.Status, Str.LocalClockOffset);
+            Console.WriteLine(string.Join(Environment.NewLine, row));
+            if (_procedCnt == _serverCnt) break;
+        }
+    }
+
+
+    [DllImport("Kernel32.dll")]
+    private static extern void SetLocalTime(Systemtime st);
+
+    private static void SetSysteTime(DateTime time)
+    {
+        var timeToSet = new Systemtime {
+                                           wDay          = (ushort)time.Day
+                                         , wDayOfWeek    = (ushort)time.DayOfWeek
+                                         , wHour         = (ushort)time.Hour
+                                         , wMilliseconds = (ushort)time.Millisecond
+                                         , wMinute       = (ushort)time.Minute
+                                         , wMonth        = (ushort)time.Month
+                                         , wSecond       = (ushort)time.Second
+                                         , wYear         = (ushort)time.Year
+                                       };
+        SetLocalTime(timeToSet);
+    }
+
+
+    [SuppressMessage("ReSharper", "AccessToDisposedClosure")]
+    public override async Task Run()
+    {
+        var tPrinting = Task.Run(Printing);
+
+        await Parallel.ForEachAsync(_serverDictionary
+                                  , new ParallelOptions { MaxDegreeOfParallelism = _MAX_DEGREE_OF_PARALLELISM }
+                                  , (server, _) => {
+                                        server.Value.Status = ServerStatues.Connecting;
+                                        var offset = GetNtpOffset(server.Key);
+
+                                        Interlocked.Increment(ref _procedCnt);
+
+                                        if (offset == TimeSpan.Zero) {
+                                            server.Value.Status = ServerStatues.Failed;
+                                        }
+                                        else {
+                                            server.Value.Status = ServerStatues.Succeed;
+                                            Interlocked.Increment(ref _successCnt);
+                                            server.Value.Offset = offset;
+                                        }
+
+                                        return ValueTask.CompletedTask;
+                                    });
+
+        tPrinting.Wait();
+        var avgOffset = TimeSpan.FromTicks((long)_serverDictionary //
+                                                 .Where(x => x.Value.Status == ServerStatues.Succeed)
+                                                 .Average(x => x.Value.Offset.Ticks));
+
+
+        Console.WriteLine(Str.NtpReceiveDone, _successCnt, _serverCnt, avgOffset.TotalMilliseconds);
+        if (!Opt.Sync) return;
+        Console.WriteLine();
+        SetSysteTime(DateTime.Now - avgOffset);
+        Console.WriteLine(Str.LocalTimeSyncDone);
+    }
+
+    private record Server
+    {
+        public TimeSpan      Offset;
+        public ServerStatues Status;
+    }
+}
\ No newline at end of file
diff --git a/src/Time/Option.cs b/src/Time/Option.cs
new file mode 100644
index 0000000..1766e3c
--- /dev/null
+++ b/src/Time/Option.cs
@@ -0,0 +1,11 @@
+namespace Dot.Time;
+
+[Verb("time", HelpText = nameof(Str.HelpForText), ResourceType = typeof(Str))]
+public class Option : IOption
+{
+    [Option('s', "sync", HelpText = nameof(Str.SyncToLocalTime), Default = false, ResourceType = typeof(Str))]
+    public bool Sync { get; set; }
+
+    [Option('t', "timeout", HelpText = nameof(Str.TimeoutMillSecs), Default = 3000, ResourceType = typeof(Str))]
+    public int Timeout { get; set; }
+}
\ No newline at end of file
diff --git a/src/ToLf/Main.cs b/src/ToLf/Main.cs
index e53741b..00afacd 100644
--- a/src/ToLf/Main.cs
+++ b/src/ToLf/Main.cs
@@ -26,7 +26,7 @@ public sealed class Main : Tool<Option>, IDisposable
         _disposed = true;
     }
 
-    private void FileHandle(string file)
+    private async ValueTask FileHandle(string file, CancellationToken _)
     {
         _step2Bar.Tick();
         ShowMessage(1, 0, 0);
@@ -36,7 +36,7 @@ public sealed class Main : Tool<Option>, IDisposable
         var isBin      = false;
         int data;
 
-        using (var fsr = OpenFileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
+        await using (var fsr = OpenFileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
             if (Opt.ReadOnly) { //测试，只读模式
                 ShowMessage(0, 1, 0);
                 return;
@@ -48,7 +48,7 @@ public sealed class Main : Tool<Option>, IDisposable
             }
 
 
-            using var fsw = OpenFileStream(tmpFile, FileMode.OpenOrCreate, FileAccess.Write);
+            await using var fsw = OpenFileStream(tmpFile, FileMode.OpenOrCreate, FileAccess.Write);
 
             while ((data = fsr.ReadByte()) != -1) {
                 switch (data) {
@@ -92,7 +92,7 @@ public sealed class Main : Tool<Option>, IDisposable
             _procedCnt        += procedCnt;
             _replaceCnt       += replaceCnt;
             _breakCnt         += breakCnt;
-            _step2Bar.Message =  string.Format(Strings.ShowMessageTemp, _procedCnt, _totalCnt, _replaceCnt, _breakCnt);
+            _step2Bar.Message =  string.Format(Str.ShowMessageTemp, _procedCnt, _totalCnt, _replaceCnt, _breakCnt);
         }
     }
 
@@ -103,25 +103,25 @@ public sealed class Main : Tool<Option>, IDisposable
     }
 
     [SuppressMessage("ReSharper", "PossibleMultipleEnumeration")]
-    public override void Run()
+    public override async Task Run()
     {
         if (!Directory.Exists(Opt.Path))
-            throw new ArgumentException(nameof(Opt.Path), string.Format(Strings.PathNotFound, Opt.Path));
+            throw new ArgumentException(nameof(Opt.Path), string.Format(Str.PathNotFound, Opt.Path));
 
 
-        using var step1Bar = new IndeterminateProgressBar(Strings.SearchingFile, DefaultProgressBarOptions);
+        using var step1Bar = new IndeterminateProgressBar(Str.SearchingFile, DefaultProgressBarOptions);
 
 
         var fileList = EnumerateFiles(Opt.Path, Opt.Filter);
         _totalCnt = fileList.Count();
 
-        step1Bar.Message = string.Format(Strings.SearchingFileOK, _totalCnt);
+        step1Bar.Message = string.Format(Str.SearchingFileOK, _totalCnt);
         step1Bar.Finished();
         if (_totalCnt == 0) return;
 
 
         _step2Bar = step1Bar.Spawn(_totalCnt, string.Empty, DefaultProgressBarOptions);
 
-        Parallel.ForEach(fileList, FileHandle);
+        await Parallel.ForEachAsync(fileList, FileHandle);
     }
 }
\ No newline at end of file
diff --git a/src/ToLf/Option.cs b/src/ToLf/Option.cs
index e5637f2..28f98d5 100644
--- a/src/ToLf/Option.cs
+++ b/src/ToLf/Option.cs
@@ -1,4 +1,4 @@
 namespace Dot.ToLf;
 
-[Verb("tolf", HelpText = nameof(Strings.ConvertEndOfLineToLF), ResourceType = typeof(Strings))]
+[Verb("tolf", HelpText = nameof(Str.ConvertEndOfLineToLF), ResourceType = typeof(Str))]
 public class Option : DirOption { }
\ No newline at end of file
diff --git a/src/Tool.cs b/src/Tool.cs
index 1f06c3e..05496f4 100644
--- a/src/Tool.cs
+++ b/src/Tool.cs
@@ -13,7 +13,7 @@ public abstract class Tool<TOption> : ITool
                                             , ProgressCharacter   = '\u2500'
                                           };
 
-    protected TOption Opt { get; set; }
+    protected TOption Opt { get; }
 
     protected Tool(TOption opt)
     {
@@ -61,9 +61,10 @@ public abstract class Tool<TOption> : ITool
             }
         }
         catch (IOException) { }
+
         return fsr;
     }
 
 
-    public abstract void Run();
+    public abstract Task Run();
 }
\ No newline at end of file
diff --git a/src/ToolsFactory.cs b/src/ToolsFactory.cs
index 67d2f1f..013a942 100644
--- a/src/ToolsFactory.cs
+++ b/src/ToolsFactory.cs
@@ -13,6 +13,7 @@ public static class ToolsFactory
                  , Pwd.Option o     => new Pwd.Main(o)
                  , Text.Option o    => new Text.Main(o)
                  , Guid.Option o    => new Guid.Main(o)
+                 , Time.Option o    => new Time.Main(o)
                  , _                => throw new ArgumentOutOfRangeException(nameof(option))
                };
     }
diff --git a/src/dot.csproj b/src/dot.csproj
index ec1a403..99ddd25 100644
--- a/src/dot.csproj
+++ b/src/dot.csproj
@@ -6,7 +6,7 @@
         <ImplicitUsings>enable</ImplicitUsings>
         <RootNamespace>Dot</RootNamespace>
         <AssemblyName>dot</AssemblyName>
-        <Version>1.1.0</Version>
+        <Version>1.1.1</Version>
         <Authors>nsnail</Authors>
         <Copyright>Copyright (c) 2022 nsnail</Copyright>
         <RepositoryUrl>https://github.com/nsnail/dot.git</RepositoryUrl>
@@ -30,17 +30,17 @@
     </ItemGroup>
 
     <ItemGroup>
-        <EmbeddedResource Update="Lang\Strings.resx">
+        <EmbeddedResource Update="Lang\Str.resx">
             <Generator>PublicResXFileCodeGenerator</Generator>
-            <LastGenOutput>Strings.Designer.cs</LastGenOutput>
+            <LastGenOutput>Str.Designer.cs</LastGenOutput>
         </EmbeddedResource>
     </ItemGroup>
 
     <ItemGroup>
-        <Compile Update="Lang\Strings.Designer.cs">
+        <Compile Update="Lang\Str.Designer.cs">
             <DesignTime>True</DesignTime>
             <AutoGen>True</AutoGen>
-            <DependentUpon>Strings.resx</DependentUpon>
+            <DependentUpon>Str.resx</DependentUpon>
         </Compile>
     </ItemGroup>