diff --git a/i18N/Lab.i18N.WebApi/DemoController.cs b/i18N/Lab.i18N.WebApi/DemoController.cs
index c807214b..2c855e2d 100644
--- a/i18N/Lab.i18N.WebApi/DemoController.cs
+++ b/i18N/Lab.i18N.WebApi/DemoController.cs
@@ -11,10 +11,12 @@ public class DemoController(IStringLocalizer<DemoController> localizer) : Contro
     public IActionResult Get()
     {
         var desc = localizer["about.description"];
+        var key = localizer["exampleKey"];
 
         return Ok(new
         {
-            desc
+            desc,
+            key
         });
     }
 }
\ No newline at end of file
diff --git a/i18N/Lab.i18N.WebApi/Lab.i18N.WebApi.csproj b/i18N/Lab.i18N.WebApi/Lab.i18N.WebApi.csproj
index 4e28fa30..68bb857d 100644
--- a/i18N/Lab.i18N.WebApi/Lab.i18N.WebApi.csproj
+++ b/i18N/Lab.i18N.WebApi/Lab.i18N.WebApi.csproj
@@ -31,6 +31,9 @@
       <Content Update="wwwroot\locales\en\translation.json">
         <CopyToOutputDirectory>Always</CopyToOutputDirectory>
       </Content>
+      <Content Update="wwwroot\locales\tw\translation.json">
+        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      </Content>
     </ItemGroup>
 
 </Project>
diff --git a/i18N/Lab.i18N.WebApi/Program.cs b/i18N/Lab.i18N.WebApi/Program.cs
index 617251dc..ac619ea0 100644
--- a/i18N/Lab.i18N.WebApi/Program.cs
+++ b/i18N/Lab.i18N.WebApi/Program.cs
@@ -23,7 +23,15 @@
     });
 
     i18N.IntegrateToAspNetCore()
-        .AddBackend(new JsonFileBackend("wwwroot/locales"));
+        .AddBackend(new JsonFileBackend("wwwroot/locales"))
+        .AddBackend<InMemoryBackend>(p =>
+        {
+            var memoryBackend = new InMemoryBackend();
+            memoryBackend.AddTranslation("en", "translation", "exampleKey", "My English text.");
+            memoryBackend.AddTranslation("zh", "translation", "exampleKey", "我的中文字");
+            return memoryBackend;
+        })
+        ;
 });
 var app = builder.Build();
 
@@ -34,14 +42,13 @@
     app.UseSwaggerUI();
 }
 
-app.UseRequestLocalization(options => { options.AddSupportedCultures("de", "en"); });
-
-var supportedCultures = new[] { "en-US", "zh-TW" };
+// var supportedCultures = new[] { "en-US", "de-DE", "zh-TW" };
+var supportedCultures = new[] { "en", "de", "zh" };
 var cultureInfos = supportedCultures.Select(c => new CultureInfo(c)).ToList();
 
 app.UseRequestLocalization(p =>
 {
-    p.DefaultRequestCulture = new RequestCulture("en-US");
+    p.DefaultRequestCulture = new RequestCulture("zh-TW");
     p.SupportedCultures = cultureInfos;
     p.SupportedUICultures = cultureInfos;
     p.RequestCultureProviders.Insert(0, new HeaderRequestCultureProvider());
diff --git a/i18N/Lab.i18N.WebApi/wwwroot/locales/tw/translation.json b/i18N/Lab.i18N.WebApi/wwwroot/locales/tw/translation.json
new file mode 100644
index 00000000..c073e81b
--- /dev/null
+++ b/i18N/Lab.i18N.WebApi/wwwroot/locales/tw/translation.json
@@ -0,0 +1,11 @@
+{
+    "page": {
+        "title": "這是一個翻譯後的頁面標題"
+    },
+    "about": {
+        "description": "這是關於頁面的描述。",
+        "renderedOn": "此頁面生成於 {{date, yyyy/mm/dd}}。",
+        "additionalInformation": "額外資訊",
+        "infoText": "使用此區域提供 $t(about.additionalInformation)。"
+    }
+}