diff --git a/Difficult_Rocket/__init__.py b/Difficult_Rocket/__init__.py
index 0c72734..37e4de2 100644
--- a/Difficult_Rocket/__init__.py
+++ b/Difficult_Rocket/__init__.py
@@ -11,17 +11,14 @@ github: @shenjackyuanjie
 gitee:  @shenjackyuanjie
 """
 
-from .api import *
-from .guis import *
+__version__ = '0.6.1'
 
-__all__ = [
-    'new_thread',
-    'Delivery',
-    'load_file'
-]
+playing = False
 
+if playing:
+    from .api import new_thread
 
-@new_thread('think')
-def think(some_thing_to_think):
-    gotcha = 'think_result'
-    return gotcha
+    @new_thread('think')
+    def think(some_thing_to_think):
+        gotcha = 'think_result'
+        return gotcha
diff --git a/Difficult_Rocket/api/Exp.py b/Difficult_Rocket/api/Exp.py
index ef700ba..b2527f9 100644
--- a/Difficult_Rocket/api/Exp.py
+++ b/Difficult_Rocket/api/Exp.py
@@ -13,6 +13,7 @@ gitee:  @shenjackyuanjie
 
 __all__ = ['TexturesError',
            'LanguageError',
+           'CommandError',
            'TestError']
 
 
@@ -26,6 +27,11 @@ class TexturesError(Error):
     pass
 
 
+class CommandError(Error):
+    """命令解析相关 error"""
+    pass
+
+
 class LanguageError(Error):
     """lang 文件相关 error"""
     pass
diff --git a/Difficult_Rocket/api/new_thread.py b/Difficult_Rocket/api/new_thread.py
index 380656f..6fe5389 100644
--- a/Difficult_Rocket/api/new_thread.py
+++ b/Difficult_Rocket/api/new_thread.py
@@ -1,8 +1,9 @@
 import functools
 import inspect
 import threading
-from typing import Optional, Callable
 from Difficult_Rocket import crash
+from typing import Optional, Callable
+
 
 """
 This part of code come from MCDReforged(https://github.com/Fallen-Breath/MCDReforged)
@@ -57,10 +58,7 @@ class FunctionThread(threading.Thread):
         super().join(timeout)
 
     def start(self) -> None:
-        try:
-            super().start()
-        except:
-            raise
+        super().start()
 
 
 
diff --git a/Difficult_Rocket/client.py b/Difficult_Rocket/client.py
index d4a90ba..42b52c4 100644
--- a/Difficult_Rocket/client.py
+++ b/Difficult_Rocket/client.py
@@ -26,10 +26,11 @@ if __name__ == '__main__':  # been start will not run this
     sys.path.append('/bin')
 
 # Difficult_Rocket function
-from .command import command
+from .command import line
 from .api.translate import tr
 from .fps.fps_log import FpsLogger
 from .api import tools, new_thread, translate
+from .api.Exp import *
 
 # libs function
 local_lib = True
@@ -112,10 +113,10 @@ class ClientWindow(pyglet.window.Window):
         self.setup()
         # 命令显示
         self.command_group = pyglet.graphics.Group(0)
-        self.command = command.CommandLine(x=50, y=30,  # 实例化
-                                           width=self.width - 100, height=40,
-                                           length=int(self.game_config['command']['show']),
-                                           batch=self.label_batch, group=self.command_group)
+        self.command = line.CommandLine(x=50, y=30,  # 实例化
+                                        width=self.width - 100, height=40,
+                                        length=int(self.game_config['command']['show']),
+                                        batch=self.label_batch, group=self.command_group)
         self.push_handlers(self.command)
         self.command.set_handler('on_command', self.on_command)
         self.command.set_handler('on_message', self.on_message)
@@ -168,7 +169,7 @@ class ClientWindow(pyglet.window.Window):
                 self.run_input = False
             try:
                 self.on_command(get)
-            except:
+            except CommandError:
                 self.logger.error(traceback.format_exc())
         self.logger.debug('read_input end')
 
@@ -192,8 +193,7 @@ class ClientWindow(pyglet.window.Window):
     def FPS_update(self, tick: Decimal):
         now_FPS = pyglet.clock.get_fps()
         self.fps_log.update_tick(tick)
-        # self.fps_label.text = 'FPS: {:5.1f} {:.1f} ({:.1f}/{:.1f}) | MSPF: {:.5f} '.format(now_FPS, 1 / tick, self.fps_log.max_fps, self.fps_log.min_fps, tick)
-        self.fps_label.text = f'FPS: {now_FPS:>10.1f} {self.fps_log.max_fps:>5.1f} {self.fps_log.min_fps:>5.1f}'
+        self.fps_label.text = f'FPS: {now_FPS:>13.1f} {self.fps_log.max_fps:>5.1f} {self.fps_log.min_fps:>5.1f}'
 
     def on_draw(self):
         self.clear()
@@ -211,7 +211,7 @@ class ClientWindow(pyglet.window.Window):
     command line event
     """
 
-    def on_command(self, command: command.CommandLine.text):
+    def on_command(self, command: line.CommandLine.text):
         self.logger.info(tr.lang('window', 'command.text').format(command))
         if command == 'stop':
             self.dispatch_event('on_close', 'command')  # source = command
@@ -226,7 +226,7 @@ class ClientWindow(pyglet.window.Window):
         elif command == 'default':
             self.set_size(int(self.config_file['window_default']['width']), int(self.config_file['window_default']['height']))
 
-    def on_message(self, message: command.CommandLine.text):
+    def on_message(self, message: line.CommandLine.text):
         self.logger.info(tr.lang('window', 'message.text').format(message))
 
     """
diff --git a/Difficult_Rocket/command/command.py b/Difficult_Rocket/command/line.py
similarity index 97%
rename from Difficult_Rocket/command/command.py
rename to Difficult_Rocket/command/line.py
index f2d31c2..a4a3147 100644
--- a/Difficult_Rocket/command/command.py
+++ b/Difficult_Rocket/command/line.py
@@ -17,8 +17,7 @@ from typing import Union
 from decimal import Decimal
 
 # from DR
-from ..api import translate
-from ..api.new_thread import new_thread
+from Difficult_Rocket.api import translate, new_thread
 
 # from libs.pyglet
 from libs import pyglet
@@ -48,7 +47,7 @@ class CommandLine(widgets.WidgetBase):
 
         # normal values
         self.length = length
-        self.command_list = ['' for line in range(length)]
+        self._command_list = ['' for line in range(length)]
         self._command_text = command_text
         self._text_position = 0
         self._command_view = 0
@@ -176,6 +175,10 @@ class CommandLine(widgets.WidgetBase):
             if not self.editing:  # 如果不在编辑再隐藏
                 self._label[0].visible = False
 
+    @property
+    def command_list(self):
+        return self._command_list
+
     """
     events
     """