diff --git a/Convention/Runtime/File.py b/Convention/Runtime/File.py
index 50551ee..64cdea1 100644
--- a/Convention/Runtime/File.py
+++ b/Convention/Runtime/File.py
@@ -218,7 +218,7 @@ class ToolFile(BaseModel):
         with open(self.OriginFullPath, 'rb') as f:
             return f.read()
     def LoadAsText(self) -> str:
-         with open(self.OriginFullPath, 'r') as f:
+         with open(self.OriginFullPath, 'r', encoding='utf-8') as f:
             return f.read()
     def LoadAsWav(self):
         try:
@@ -370,8 +370,8 @@ class ToolFile(BaseModel):
             f.write(binary_data)
         return self
     def SaveAsText(self, text_data:str):
-        with open(self.OriginFullPath, 'w') as f:
-            f.writelines(text_data)
+        with open(self.OriginFullPath, 'w', encoding='utf-8') as f:
+            f.write(text_data)
         return self
     def SaveAsAudio(self, audio_data:"AudioSegment"):
         '''
diff --git a/Convention/Runtime/String.py b/Convention/Runtime/String.py
index 1453146..83317dd 100644
--- a/Convention/Runtime/String.py
+++ b/Convention/Runtime/String.py
@@ -52,7 +52,10 @@ def word_segmentation(
     except ImportError:
         raise ValueError("jieba is not install")
 
-def GetEditorDistanceAndOperations(s1:str, s2:str) -> Tuple[int, List[Tuple[str, int, int, str]]]:
+def GetEditorDistanceAndOperations(
+    s1:str, 
+    s2:str, 
+    ) -> Tuple[int, List[Tuple[Literal["add","delete"], int, int, str]]]:
     """
     计算两个字符串的编辑距离和操作序列
     操作格式: (操作类型, 开始位置, 结束位置, 内容)
@@ -112,3 +115,14 @@ def GetEditorDistanceAndOperations(s1:str, s2:str) -> Tuple[int, List[Tuple[str,
     edit_distance = m + n - 2 * lcs[m][n]
     return edit_distance, merged_operations
 
+def GetDiffOperations(
+    s1:str, 
+    s2:str, 
+    ) -> List[Tuple[Literal["add","delete"], int, int, str]]:
+    """
+    计算两个字符串的差异操作序列
+    操作格式: (操作类型, 开始位置, 结束位置, 内容)
+    位置基于源字符串s1
+    """
+    
+    return operations
\ No newline at end of file