diff --git a/runtime/READMD.md b/runtime/READMD.md
new file mode 100644
index 0000000..51ca1a9
--- /dev/null
+++ b/runtime/READMD.md
@@ -0,0 +1,16 @@
+# Runtime
+一台VM運行時，用於隔離租戶環境與服務器環境，提供腿本用於調用模型流。
+# 語法
+```
+// 使用//註解
+// "雙引號字符串"
+let s = "hello"
+// 整數
+let i = 10
+// 浮點數
+let f = 1.2
+// 動態類型
+s = i
+// 返回值
+return s
+```
\ No newline at end of file
diff --git a/runtime/ast/runtime.py b/runtime/ast/runtime.py
index 8449e82..ce977ad 100644
--- a/runtime/ast/runtime.py
+++ b/runtime/ast/runtime.py
@@ -60,14 +60,7 @@ class Runtime:
     def variable_declaration(self, ast):
         id = ast.get("identifier").get("name")
         v = ast.get("value")
-        if self._is_literal(v):
-            l = self.literal(v)
-            if l != None:
-                self.records[id] = l
-            else:
-                raise Exception("Unknown literal type: " + v.get("type"))
-        if self._is_identifier(v):
-            self.records[id] = self.records.get(v.get("name"))
+        self.records[id] = self.unquote(v)
     
     def literal(self, ast):
         if ast.get("type") == "StringLiteral":
diff --git a/src/blackbox/tts.py b/src/blackbox/tts.py
index 68caa4d..f030692 100644
--- a/src/blackbox/tts.py
+++ b/src/blackbox/tts.py
@@ -1,11 +1,9 @@
 import io
-from typing import Any, Coroutine
 
 from fastapi import Request, Response, status
 from fastapi.responses import JSONResponse
 from .blackbox import Blackbox
 from tts.tts_service import TTService
-import time
 
 class TTS(Blackbox):