diff --git a/NlpProc/NlpDirectCmp.py b/NlpProc/NlpDirectCmp.py
index 4441894..6fc0ac7 100644
--- a/NlpProc/NlpDirectCmp.py
+++ b/NlpProc/NlpDirectCmp.py
@@ -2,11 +2,11 @@ import NlpUtils
 import jsondiff
 import sys
 
-json1 = NlpUtils.LoadJsonFromFile(sys.argv[1])
-json2 = NlpUtils.LoadJsonFromFile(sys.argv[2])
+json1 = NlpUtils.LoadJson(sys.argv[1])
+json2 = NlpUtils.LoadJson(sys.argv[2])
 
-(_, value1, ) = NlpUtils.NlpJson2PlainJsonWrapper(json1)
-(_, value2, ) = NlpUtils.NlpJson2PlainJsonWrapper(json2)
+(_, value1, ) = NlpUtils.NlpJson2PlainJson(json1)
+(_, value2, ) = NlpUtils.NlpJson2PlainJson(json2)
 
 diff = jsondiff.diff(value1, value2)
 print(diff)
diff --git a/NlpProc/NlpJsonDecoder.py b/NlpProc/NlpJsonDecoder.py
index e1b4d6b..6d0de6b 100644
--- a/NlpProc/NlpJsonDecoder.py
+++ b/NlpProc/NlpJsonDecoder.py
@@ -1,34 +1,25 @@
 import NlpUtils
 import jsondiff
-import sys, collections
+import collections
 
-CmdArgvPair = collections.namedtuple('CmdArgvPair', ('nlpJson', 'trTemplate', 'trDiff', 'trIndex'))
-def CmdArgvAnalyzer() -> tuple[CmdArgvPair]:
-    ls: list[CmdArgvPair] = []
+VtTrDataTuple = collections.namedtuple('VtTrDataTuple', ('nlpJson', 'trTemplate', 'trDiff', 'trIndex'))
+def ConstructVtTrDataTuple() -> tuple[VtTrDataTuple]:
+    return tuple(VtTrDataTuple._make((
+        f'../NlpSrc/VT{i}.json',
+        f'../NlpTr/VT{i}.template.json',
+        f'../NlpTr/VT{i}.diff',
+        f'../NlpTr/VT{i}.index',
+    ))for i in NlpUtils.g_VirtoolsVersion)
 
-    argc = len(sys.argv) - 1
-    if argc % 4 != 0:
-        print("invalid parameter.")
-        sys.exit(1)
-
-    count = argc // 4
-    return tuple(CmdArgvPair._make(sys.argv[1 + i * 4:5 + i * 4]) for i in range(count))
-
-# script will order 1 file as reference
-# 0. the nlp json file
-# script will output 3 files for each version translation.
-# 0. translation template json
-# 0. the diff result comparing with the previous version
-# 0. a list including the key of each value in template json
-# so for a single version virtools, we need input 4 arguments
 if __name__ == "__main__":
-    resolvedArgv = CmdArgvAnalyzer()
 
     prevJson = None
-    for vtVer in resolvedArgv:
+    for vtVer in ConstructVtTrDataTuple():
+        print(f'Processing {vtVer.nlpJson}...')
+
         # read nlp json and convert it into plain json
         nlpJson = NlpUtils.LoadJson(vtVer.nlpJson)
-        (plainKeys, plainValues, ) = NlpUtils.NlpJson2PlainJsonWrapper(nlpJson)
+        (plainKeys, plainValues, ) = NlpUtils.NlpJson2PlainJson(nlpJson)
 
         # write index file
         NlpUtils.DumpTrIndex(vtVer.trIndex, plainKeys)
@@ -48,7 +39,7 @@ if __name__ == "__main__":
             # write diff
             NlpUtils.DumpTrDiff(vtVer.trDiff, insertedKey, deletedKey)
             # write template with special treat
-            NlpUtils.DumpTrTemplate(vtVer.trTemplate, dict((i, j) for i, j in enumerate(insertedVal)))
+            NlpUtils.DumpTrTemplate(vtVer.trTemplate, dict((plainKeys[insertedKey[i]], insertedVal[i]) for i in range(len(insertedKey))))
 
         # assign prev json
         prevJson = plainValues
diff --git a/NlpProc/NlpJsonEncoder.py b/NlpProc/NlpJsonEncoder.py
new file mode 100644
index 0000000..4901183
--- /dev/null
+++ b/NlpProc/NlpJsonEncoder.py
@@ -0,0 +1,33 @@
+import NlpUtils
+import jsondiff
+import collections
+
+g_SupportedEncoding = {
+    'zh-cn': ('utf-8', 'gb2312', )
+}
+
+VtTrDataTuple = collections.namedtuple('VtTrDataTuple', ('rawNlp', 'trTemplate', 'trDiff', 'trIndex'))
+def GetRawNlpPath(ver: str, lang: str) -> str:
+    return f'../NlpTr/out/VT{ver}.{lang}.txt'
+def GetTrPath(ver: str, lang: str) -> str:
+    return f'../NlpTr/VT{ver}.{lang}.json'
+def GetTrDiffPath(ver: str) -> str:
+    return f'../NlpTr/VT{ver}.diff'
+def GetTrIndexPath(ver: str) -> str:
+    return f'../NlpTr/VT{ver}.index'
+
+if __name__ == "__main__":
+
+    for ver in NlpUtils.g_VirtoolsVersion:
+        # load diff and index data
+
+        for lang in NlpUtils.g_SupportedLangs:
+            # load lang file
+
+            # patch it
+
+            # convert plain json to nested json
+
+            # write into file with different encoding
+            for enc in g_SupportedEncoding[lang]:
+                print(f'Process {ver}.{lang}.{enc}...')
diff --git a/NlpProc/NlpTrBaseCompiler.py b/NlpProc/NlpTrBaseCompiler.py
deleted file mode 100644
index 86c0f4a..0000000
--- a/NlpProc/NlpTrBaseCompiler.py
+++ /dev/null
@@ -1,2 +0,0 @@
-import NlpUtils
-import sys, collections
diff --git a/NlpProc/NlpTrPatchCompiler.py b/NlpProc/NlpTrPatchCompiler.py
deleted file mode 100644
index e69de29..0000000
diff --git a/NlpProc/NlpTrPatchCreator.py b/NlpProc/NlpTrPatchCreator.py
deleted file mode 100644
index 70f3dc2..0000000
--- a/NlpProc/NlpTrPatchCreator.py
+++ /dev/null
@@ -1,4 +0,0 @@
-import NlpUtils
-import sys, collections
-
-
diff --git a/NlpProc/NlpUtils.py b/NlpProc/NlpUtils.py
index 8cd45bf..6adb18d 100644
--- a/NlpProc/NlpUtils.py
+++ b/NlpProc/NlpUtils.py
@@ -3,6 +3,13 @@ import collections
 import io
 import json
 
+g_VirtoolsVersion: tuple[str] = (
+    '25', '35', '40', '50',
+)
+g_SupportedLangs: tuple[str] = (
+    'zh-cn', 
+)
+
 def DumpJson(filepath: str, jsonData: dict):
     with open(filepath, 'w', encoding='utf-8') as f:
         json.dump(jsonData, f, indent=4, sort_keys=False)
@@ -60,7 +67,7 @@ def LoadTrDiff(filepath: str) -> dict:
 
 # return a tuple. (insertedKey, deletedKey, insertedVal)
 def SeperatePlainJsonDiff(diffData: dict) -> tuple:
-    insertedKey: list[str] = []
+    insertedKey: list[int] = []
     insertedVal: list[str] = []
 
     if jsondiff.insert in diffData:
@@ -75,14 +82,28 @@ def SeperatePlainJsonDiff(diffData: dict) -> tuple:
 
     return (insertedKey, deletedKey, insertedVal)
 
+def CombinePlainJsonDiff(insertedKey: list[int], deletedKey: list[int], insertedVal: list[str]) -> dict:
+    assert len(insertedKey) == len(insertedVal)
+
+    result: dict = {}
+    if len(insertedKey) != 0:
+        result[jsondiff.insert] = []
+    for k, v in zip(insertedKey, insertedVal):
+        result[jsondiff.insert].append((k, v))
+    
+    if len(deletedKey) != 0:
+        result[jsondiff.delete] = deletedKey[:]
+
+    return result
+
 # return a tuple. (keyList, valueList)
-def NlpJson2PlainJsonWrapper(nlpJson: dict) -> tuple:
+def NlpJson2PlainJson(nlpJson: dict) -> tuple:
     keyList: list[str] = []
     valueList: list[str] = []
     stack: collections.deque = collections.deque()
-    NlpJson2PlainJson(nlpJson, stack, keyList, valueList)
+    InternalNlpJson2PlainJson(nlpJson, stack, keyList, valueList)
     return (keyList, valueList, )
-def NlpJson2PlainJson(nlpJson: dict, stack: collections.deque, keyList: list[str], valueList: list[str]):
+def InternalNlpJson2PlainJson(nlpJson: dict, stack: collections.deque, keyList: list[str], valueList: list[str]):
     assert isinstance(nlpJson, dict)
     assert 'entries' in nlpJson
 
@@ -97,6 +118,6 @@ def NlpJson2PlainJson(nlpJson: dict, stack: collections.deque, keyList: list[str
             # is a sub section
             # push section name and recursive calling this function
             stack.append(entry['section'])
-            NlpJson2PlainJson(entry, stack, keyList, valueList)
+            InternalNlpJson2PlainJson(entry, stack, keyList, valueList)
             stack.pop()
 
diff --git a/NlpProc/README.md b/NlpProc/README.md
index c71b6b0..f72bc21 100644
--- a/NlpProc/README.md
+++ b/NlpProc/README.md
@@ -2,12 +2,4 @@
 
 Example:
 
-`py NlpJsonDecoder.py ../NlpSrc/VT25.json ../NlpTr/VT25.template.json ../NlpTr/VT25.diff ../NlpTr/VT25.index ../NlpSrc/VT35.json ../NlpTr/VT35.template.json ../NlpTr/VT35.diff ../NlpTr/VT35.index ../NlpSrc/VT40.json ../NlpTr/VT40.template.json ../NlpTr/VT40.diff ../NlpTr/VT40.index ../NlpSrc/VT50.json ../NlpTr/VT50.template.json ../NlpTr/VT50.diff ../NlpTr/VT50.index`
-
-```
-py NlpJsonDecoder.py
-../NlpSrc/VT25.json ../NlpTr/VT25.template.json ../NlpTr/VT25.diff ../NlpTr/VT25.index
-../NlpSrc/VT35.json ../NlpTr/VT35.template.json ../NlpTr/VT35.diff ../NlpTr/VT35.index
-../NlpSrc/VT40.json ../NlpTr/VT40.template.json ../NlpTr/VT40.diff ../NlpTr/VT40.index
-../NlpSrc/VT50.json ../NlpTr/VT50.template.json ../NlpTr/VT50.diff ../NlpTr/VT50.index
-```
+Create templates: `py NlpJsonDecoder.py`