diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/AbpAspNetCoreMvcUiPackagesModule.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/AbpAspNetCoreMvcUiPackagesModule.cs
index a5ee47a7535..93fa193bc71 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/AbpAspNetCoreMvcUiPackagesModule.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/AbpAspNetCoreMvcUiPackagesModule.cs
@@ -1,5 +1,7 @@
 using Volo.Abp.AspNetCore.Mvc.UI.Bundling;
 using Volo.Abp.AspNetCore.Mvc.UI.Packages.BootstrapDatepicker;
+using Volo.Abp.AspNetCore.Mvc.UI.Packages.JQueryValidation;
+using Volo.Abp.AspNetCore.Mvc.UI.Packages.Timeago;
 using Volo.Abp.Localization;
 using Volo.Abp.Modularity;
 
@@ -12,6 +14,7 @@ public override void ConfigureServices(ServiceConfigurationContext context)
         {
             Configure<AbpLocalizationOptions>(options =>
             {
+                //BootstrapDatepicker
                 options.AddLanguagesMapOrUpdate(BootstrapDatepickerScriptContributor.PackageName,
                     new NameValue("zh-Hans", "zh-CN"),
                     new NameValue("zh-Hant", "zh-TW"));
@@ -19,6 +22,16 @@ public override void ConfigureServices(ServiceConfigurationContext context)
                 options.AddLanguageFilesMapOrUpdate(BootstrapDatepickerScriptContributor.PackageName,
                     new NameValue("zh-Hans", "zh-CN"),
                     new NameValue("zh-Hant", "zh-TW"));
+
+                //Timeago
+                options.AddLanguageFilesMapOrUpdate(TimeagoScriptContributor.PackageName,
+                    new NameValue("zh-Hans", "zh-CN"),
+                    new NameValue("zh-Hant", "zh-TW"));
+
+                //JQueryValidation
+                options.AddLanguageFilesMapOrUpdate(JQueryValidationScriptContributor.PackageName,
+                    new NameValue("zh-Hans", "zh"),
+                    new NameValue("zh-Hant", "zh_TW"));
             });
         }
     }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/BootstrapDatepicker/BootstrapDatepickerScriptContributor.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/BootstrapDatepicker/BootstrapDatepickerScriptContributor.cs
index ca852972d81..751fb8c53e6 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/BootstrapDatepicker/BootstrapDatepickerScriptContributor.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/BootstrapDatepicker/BootstrapDatepickerScriptContributor.cs
@@ -1,5 +1,4 @@
 using System.Collections.Generic;
-using System.Globalization;
 using Volo.Abp.AspNetCore.Mvc.UI.Bundling;
 using Volo.Abp.AspNetCore.Mvc.UI.Packages.JQuery;
 using Volo.Abp.Localization;
@@ -19,26 +18,12 @@ public override void ConfigureBundle(BundleConfigurationContext context)
 
         public override void ConfigureDynamicResources(BundleConfigurationContext context)
         {
-            var cultureName = CultureInfo.CurrentUICulture.DateTimeFormat.Calendar.AlgorithmType ==
-                              CalendarAlgorithmType.LunarCalendar
-                ? "en"
-                : CultureInfo.CurrentUICulture.Name;
-
-            TryAddCultureFile(context, cultureName);
-        }
-
-        protected virtual bool TryAddCultureFile(BundleConfigurationContext context, string cultureName)
-        {
-            var fileName = context.LocalizationOptions.GetLanguageFilesMap(PackageName, cultureName);
+            var fileName = context.LocalizationOptions.GetCurrentUICultureLanguageFilesMap(PackageName);
             var filePath = $"/libs/bootstrap-datepicker/locales/bootstrap-datepicker.{fileName}.min.js";
-
-            if (!context.FileProvider.GetFileInfo(filePath).Exists)
+            if (context.FileProvider.GetFileInfo(filePath).Exists)
             {
-                return false;
+                context.Files.AddIfNotContains(filePath);
             }
-
-            context.Files.AddIfNotContains(filePath);
-            return true;
         }
     }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/JQueryValidation/JQueryValidationScriptContributor.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/JQueryValidation/JQueryValidationScriptContributor.cs
index 586d8864cd4..c5387b233c6 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/JQueryValidation/JQueryValidationScriptContributor.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/JQueryValidation/JQueryValidationScriptContributor.cs
@@ -1,5 +1,4 @@
 using System.Collections.Generic;
-using System.Globalization;
 using Volo.Abp.AspNetCore.Mvc.UI.Bundling;
 using Volo.Abp.AspNetCore.Mvc.UI.Packages.JQuery;
 using Volo.Abp.Localization;
@@ -10,8 +9,6 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Packages.JQueryValidation
     [DependsOn(typeof(JQueryScriptContributor))]
     public class JQueryValidationScriptContributor : BundleContributor
     {
-        public const string DefaultLocalizationFolder = "/libs/jquery-validation/localization/";
-
         public const string PackageName = "jquery-validation";
 
         public override void ConfigureBundle(BundleConfigurationContext context)
@@ -21,41 +18,12 @@ public override void ConfigureBundle(BundleConfigurationContext context)
 
         public override void ConfigureDynamicResources(BundleConfigurationContext context)
         {
-            //TODO: Can we optimize these points:
-            // - Can we get rid of context.FileProvider.GetFileInfo call?
-            // - What if the same Contributor is used twice for a page.
-            //   Duplication is prevented by the bundle manager, however the logic below will execute twice
-
-            var cultureName = CultureInfo.CurrentUICulture.TwoLetterISOLanguageName.Replace('-', '_');
-
-            var fileName = context.LocalizationOptions.GetLanguageFilesMap(PackageName, cultureName);
-            if (TryAddCultureFile(context, fileName))
-            {
-                return;
-            }
-
-            if (!cultureName.Contains("_"))
-            {
-                return;
-            }
-
-            fileName = context.LocalizationOptions.GetLanguageFilesMap(PackageName,
-                cultureName.Substring(0, cultureName.IndexOf('_')));
-            TryAddCultureFile(context, fileName);
-        }
-
-        protected virtual bool TryAddCultureFile(BundleConfigurationContext context, string cultureName)
-        {
-            var filePath = DefaultLocalizationFolder + "messages_" + cultureName + ".js";
-            var fileInfo = context.FileProvider.GetFileInfo(filePath);
-
-            if (!fileInfo.Exists)
+            var fileName = context.LocalizationOptions.GetCurrentUICultureLanguageFilesMap(PackageName);
+            var filePath = $"/libs/jquery-validation/localization/messages_{fileName}.js";
+            if (context.FileProvider.GetFileInfo(filePath).Exists)
             {
-                return false;
+                context.Files.AddIfNotContains(filePath);
             }
-
-            context.Files.AddIfNotContains(filePath);
-            return true;
         }
     }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/Timeago/TimeagoScriptContributor.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/Timeago/TimeagoScriptContributor.cs
index 9edbf065cb6..56adbe5debd 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/Timeago/TimeagoScriptContributor.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Packages/Volo/Abp/AspNetCore/Mvc/UI/Packages/Timeago/TimeagoScriptContributor.cs
@@ -1,7 +1,7 @@
 using System.Collections.Generic;
-using System.Globalization;
 using Volo.Abp.AspNetCore.Mvc.UI.Bundling;
 using Volo.Abp.AspNetCore.Mvc.UI.Packages.JQuery;
+using Volo.Abp.Localization;
 using Volo.Abp.Modularity;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Packages.Timeago
@@ -9,6 +9,8 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Packages.Timeago
     [DependsOn(typeof(JQueryScriptContributor))]
     public class TimeagoScriptContributor : BundleContributor
     {
+        public const string PackageName = "jquery.timeago";
+
         public override void ConfigureBundle(BundleConfigurationContext context)
         {
             context.Files.AddIfNotContains("/libs/timeago/jquery.timeago.js");
@@ -16,17 +18,11 @@ public override void ConfigureBundle(BundleConfigurationContext context)
 
         public override void ConfigureDynamicResources(BundleConfigurationContext context)
         {
-            var cultureName = CultureInfo.CurrentUICulture.TwoLetterISOLanguageName;
-            if (cultureName.StartsWith("en"))
-            {
-                return;
-            }
-
-            var cultureFileName = $"/libs/timeago/locales/jquery.timeago.{cultureName}.js";
-
-            if (context.FileProvider.GetFileInfo(cultureFileName).Exists)
+            var fileName = context.LocalizationOptions.GetCurrentUICultureLanguageFilesMap(PackageName);
+            var filePath = $"/libs/timeago/locales/jquery.timeago.{fileName}.js";
+            if (context.FileProvider.GetFileInfo(filePath).Exists)
             {
-                context.Files.Add(cultureFileName);
+                context.Files.Add(filePath);
             }
         }
     }
diff --git a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpLocalizationOptionsExtensions.cs b/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpLocalizationOptionsExtensions.cs
index 36355027db0..410e4684ccd 100644
--- a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpLocalizationOptionsExtensions.cs
+++ b/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpLocalizationOptionsExtensions.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 
 namespace Volo.Abp.Localization
@@ -24,6 +25,11 @@ public static string GetLanguagesMap(this AbpLocalizationOptions localizationOpt
                 : language;
         }
 
+        public static string GetCurrentUICultureLanguagesMap(this AbpLocalizationOptions localizationOptions, string packageName)
+        {
+            return GetLanguagesMap(localizationOptions, packageName, CultureInfo.CurrentUICulture.Name);
+        }
+
         public static AbpLocalizationOptions AddLanguageFilesMapOrUpdate(this AbpLocalizationOptions localizationOptions,
             string packageName, params NameValue[] maps)
         {
@@ -43,6 +49,11 @@ public static string GetLanguageFilesMap(this AbpLocalizationOptions localizatio
                 : language;
         }
 
+        public static string GetCurrentUICultureLanguageFilesMap(this AbpLocalizationOptions localizationOptions, string packageName)
+        {
+            return GetLanguageFilesMap(localizationOptions, packageName, CultureInfo.CurrentUICulture.Name);
+        }
+
         private static void AddOrUpdate(IDictionary<string, List<NameValue>> maps, string packageName, NameValue value)
         {
             if (maps.TryGetValue(packageName, out var existMaps))