Merge pull request #11472 from dotnet/copilot/fix-11388

Fix incorrect ThreeLetterWindowsLanguageName example for zh-Hant (CHT -> ZHH)

Author: tarekgh

snippets/csharp/System.Globalization/CultureInfo/DisplayName/getcultures.cs

@@ -32,7 +32,6 @@ CULTURE ISO ISO WIN DISPLAYNAME                              ENGLISHNAME
 ar      ar  ara ARA Arabic                                   Arabic
 bg      bg  bul BGR Bulgarian                                Bulgarian
 ca      ca  cat CAT Catalan                                  Catalan
-zh-Hans zh  zho CHS Chinese (Simplified)                     Chinese (Simplified)
 cs      cs  ces CSY Czech                                    Czech
 da      da  dan DAN Danish                                   Danish
 de      de  deu DEU German                                   German
@@ -41,9 +40,10 @@ en      en  eng ENU English                                  English
 es      es  spa ESP Spanish                                  Spanish
 fi      fi  fin FIN Finnish                                  Finnish
 zh      zh  zho CHS Chinese                                  Chinese
-zh-Hant zh  zho CHT Chinese (Traditional)                    Chinese (Traditional)
-zh-CHS  zh  zho CHS Chinese (Simplified) Legacy              Chinese (Simplified) Legacy
-zh-CHT  zh  zho CHT Chinese (Traditional) Legacy             Chinese (Traditional) Legacy
+zh-Hans zh  zho CHS Chinese (Simplified)                     Chinese (Simplified)
+zh-Hant zh  zho ZHH Chinese (Traditional)                    Chinese (Traditional)
+
+Note: zh-Hant returns ZHH when using ICU (default). When NLS mode is enabled, it returns CHT.
 
 */
 // </snippet1>

snippets/visualbasic/VS_Snippets_CLR_System/system.Globalization.CultureInfo.GetCultures/VB/getcultures.vb

@@ -29,7 +29,6 @@ Module Module1
 'ar      ar  ara ARA Arabic                                   Arabic                                  
 'bg      bg  bul BGR Bulgarian                                Bulgarian                               
 'ca      ca  cat CAT Catalan                                  Catalan                                 
-'zh-Hans zh  zho CHS Chinese (Simplified)                     Chinese (Simplified)                    
 'cs      cs  ces CSY Czech                                    Czech                                   
 'da      da  dan DAN Danish                                   Danish                                  
 'de      de  deu DEU German                                   German                                  
@@ -38,9 +37,10 @@ Module Module1
 'es      es  spa ESP Spanish                                  Spanish                                 
 'fi      fi  fin FIN Finnish                                  Finnish                                 
 'zh      zh  zho CHS Chinese                                  Chinese                                 
-'zh-Hant zh  zho CHT Chinese (Traditional)                    Chinese (Traditional)                   
-'zh-CHS  zh  zho CHS Chinese (Simplified) Legacy              Chinese (Simplified) Legacy             
-'zh-CHT  zh  zho CHT Chinese (Traditional) Legacy             Chinese (Traditional) Legacy            
+'zh-Hans zh  zho CHS Chinese (Simplified)                     Chinese (Simplified)                    
+'zh-Hant zh  zho ZHH Chinese (Traditional)                    Chinese (Traditional)                           
+'
+'Note: zh-Hant returns ZHH when using ICU (default). When NLS mode is enabled, it returns CHT.
 
 End Module
 ' </snippet1>

xml/System.Globalization/CultureInfo.xml

@@ -3378,7 +3378,7 @@ The following code example shows that CultureInfo.Clone also clones the <xref:Sy
  The following code example displays several properties of the neutral cultures.
 
 > [!NOTE]
-> The example displays the older `zh-CHS` and `zh-CHT` culture names with the 0x0004 and 0x7C04 culture identifiers, respectively. However, your Windows Vista applications should use the `zh-Hans` name instead of zh-CHS and the `zh-Hant` name instead of zh-CHT. The `zh-Hans` and `zh-Hant` names represent the current standard, and should be used unless you have a reason for using the older names.
+> The `zh-Hans` and `zh-Hant` names represent the current standard for Chinese cultures. Older applications might reference the legacy `zh-CHS` and `zh-CHT` culture names, but these should be replaced with `zh-Hans` and `zh-Hant` respectively in modern applications.
 
  :::code language="csharp" source="~/snippets/csharp/System.Globalization/CultureInfo/DisplayName/getcultures.cs" id="Snippet1":::
  :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Globalization.CultureInfo.GetCultures/VB/getcultures.vb" id="Snippet1":::