diff --git a/Editor/Il2CppDef/Il2CppDefGenerator.cs b/Editor/Il2CppDef/Il2CppDefGenerator.cs
index a9741cb..8728c65 100644
--- a/Editor/Il2CppDef/Il2CppDefGenerator.cs
+++ b/Editor/Il2CppDef/Il2CppDefGenerator.cs
@@ -39,12 +39,6 @@ namespace HybridCLR.Editor.Il2CppDef
             GeneratePlaceHolderAssemblies();
         }
 
-
-        private static bool IsTuanJie()
-        {
-            return Regex.IsMatch(Application.unityVersion, @".*t\d+$");
-        }
-
         private void GenerateIl2CppConfig()
         {
             var frr = new FileRegionReplace(File.ReadAllText(_options.OutputFile));
@@ -66,11 +60,6 @@ namespace HybridCLR.Editor.Il2CppDef
                 }
             }
 
-            if (IsTuanJie())
-            {
-                lines.Add($"#define UNITY_ENGINE_TUANJIE 1");
-            }
-
             frr.Replace("UNITY_VERSION", string.Join("\n", lines));
 
             frr.Commit(_options.OutputFile);