diff --git a/libs/main.py b/libs/main.py
index 7210834..772841e 100644
--- a/libs/main.py
+++ b/libs/main.py
@@ -3,8 +3,9 @@ writen by shenjackyuanjie
 mail: 3695888@qq.com
 """
 
-import pyglet
 import libs
+import pyglet
+import threading
 
 from pyglet.app import run
 from pyglet.window import Window
@@ -23,9 +24,10 @@ class Game:
     def __init__(self):
         # value
         # dic
-        self.parts = {}  # now ship parts
+        self.parts = {}  # this ship parts
         self.o_parts = {}  # stand for opther parts
         self.b_g_e = {}  # stand for back ground element
+        self.planet_system = {} # hole planet system
         # list
 
     def start_game(self):
@@ -34,13 +36,17 @@ class Game:
 
     def setup(self):
         # dic
-        self.window_c = libs.loads.config(".\\configs\\window.json")
-        self.tc = libs.loads.config(".\\configs\\basic_config", "textures")
+        self.window_c = libs.loads.config(".\\configs\\window.json") # stand for window config
+        self.planet_c = libs.loads.config(".\\configs\\planet.json") # stand for planet config
+        self.textures_c = libs.loads.config(".\\configs\\basic_config", "textures") # stand for textures config
         # image
-        self.b_g = image("")
+        self.b_g = image("back_ground_space.png")
         # window
         self.window = Window(width=int(self.window_c['width']), 
                              height=int(self.window_c['height']),
                              fullscreen=mbool(self.window_c['fullscreen']),
                              caption=str(self.window_c['caption']),
                              visible=mbool(self.window_c['visible']))
+    
+    def on_draw(self):
+        pass