diff --git a/DysonNetwork.Sphere/Translation/ITranslationProvider.cs b/DysonNetwork.Sphere/Translation/ITranslationProvider.cs
index a2d9c6a..dc061f0 100644
--- a/DysonNetwork.Sphere/Translation/ITranslationProvider.cs
+++ b/DysonNetwork.Sphere/Translation/ITranslationProvider.cs
@@ -2,5 +2,5 @@ namespace DysonNetwork.Sphere.Translation;
 
 public interface ITranslationProvider
 {
-    public Task<string> Translate(string text, string targetLanguage);
+    public Task<string> Translate(string text, string targetLanguage, string? sourceLanguage = null);
 }
\ No newline at end of file
diff --git a/DysonNetwork.Sphere/Translation/TencentTranslation.cs b/DysonNetwork.Sphere/Translation/TencentTranslation.cs
index db3af86..1f6fe1b 100644
--- a/DysonNetwork.Sphere/Translation/TencentTranslation.cs
+++ b/DysonNetwork.Sphere/Translation/TencentTranslation.cs
@@ -7,19 +7,21 @@ namespace DysonNetwork.Sphere.Translation;
 public class TencentTranslation(IConfiguration configuration) : ITranslationProvider
 {
     private readonly string _region = configuration["Translation:Region"]!;
-    private readonly Credential _apiCredential = new Credential
+    private readonly long _projectId = long.Parse(configuration["Translation:ProjectId"] ?? "0");
+    private readonly Credential _apiCredential = new()
     {
         SecretId = configuration["Translation:SecretId"]!,
         SecretKey = configuration["Translation:SecretKey"]!
     };
 
-    public async Task<string> Translate(string text, string targetLanguage)
+    public async Task<string> Translate(string text, string targetLanguage, string? sourceLanguage = null)
     {
         var client = new TmtClient(_apiCredential, _region);
         var request = new TextTranslateRequest();
         request.SourceText = text;
-        request.Source = "auto";
+        request.Source = sourceLanguage ?? "auto";
         request.Target = targetLanguage;
+        request.ProjectId = _projectId;
         var response = await client.TextTranslate(request);
         return response.TargetText;
     }
diff --git a/DysonNetwork.Sphere/Translation/TranslationController.cs b/DysonNetwork.Sphere/Translation/TranslationController.cs
index b1ca313..a154127 100644
--- a/DysonNetwork.Sphere/Translation/TranslationController.cs
+++ b/DysonNetwork.Sphere/Translation/TranslationController.cs
@@ -12,7 +12,7 @@ namespace DysonNetwork.Sphere.Translation;
 public class TranslationController(ITranslationProvider provider, ICacheService cache) : ControllerBase
 {
     private const string CacheKeyPrefix = "translation:";
-    
+
     private static string GenerateCacheKey(string text, string targetLanguage)
     {
         var inputBytes = Encoding.UTF8.GetBytes($"{text}:{targetLanguage}");
@@ -22,27 +22,31 @@ public class TranslationController(ITranslationProvider provider, ICacheService
 
     [HttpPost]
     [Authorize]
-    public async Task<ActionResult<string>> Translate([FromBody] string text, [FromQuery(Name = "lang")] string targetLanguage)
+    public async Task<ActionResult<string>> Translate(
+        [FromBody] string text,
+        [FromQuery(Name = "from")] string targetLanguage,
+        [FromQuery(Name = "to")] string? sourceLanguage
+    )
     {
         if (HttpContext.Items["CurrentUser"] is not Account currentUser) return Unauthorized();
         if (currentUser.PerkSubscription is null)
             return StatusCode(403, "You need a subscription to use this feature.");
-        
+
         // Generate cache key
         var cacheKey = GenerateCacheKey(text, targetLanguage);
-        
+
         // Try to get from cache first
         var (found, cachedResult) = await cache.GetAsyncWithStatus<string>(cacheKey);
         if (found && cachedResult != null)
             return Ok(cachedResult);
-            
+
         // If not in cache, translate and cache the result
         var result = await provider.Translate(text, targetLanguage);
         if (!string.IsNullOrEmpty(result))
         {
             await cache.SetAsync(cacheKey, result, TimeSpan.FromHours(24)); // Cache for 24 hours
         }
-        
+
         return result;
     }
 }
\ No newline at end of file
diff --git a/DysonNetwork.Sphere/appsettings.json b/DysonNetwork.Sphere/appsettings.json
index 6b1ed7f..c318c8c 100644
--- a/DysonNetwork.Sphere/appsettings.json
+++ b/DysonNetwork.Sphere/appsettings.json
@@ -24,6 +24,7 @@
   "Translation": {
     "Provider": "Tencent",
     "Region": "ap-hongkong",
+    "ProjectId": "0",
     "SecretId": "",
     "SecretKey": ""
   },