diff --git a/main.py b/main.py
index 9421809..a75e9ba 100644
--- a/main.py
+++ b/main.py
@@ -2,5 +2,7 @@ import pygame as pg
 from source.main import main
 
 if __name__=='__main__':
+    # do everything in this main function
     main()
+    # don't forget quit for release all resource
     pg.quit()
\ No newline at end of file
diff --git a/source/data/entity/plant.json b/resources/data/entity/plant.json
similarity index 100%
rename from source/data/entity/plant.json
rename to resources/data/entity/plant.json
diff --git a/source/data/entity/zombie.json b/resources/data/entity/zombie.json
similarity index 100%
rename from source/data/entity/zombie.json
rename to resources/data/entity/zombie.json
diff --git a/source/data/map/level_0.json b/resources/data/map/level_0.json
similarity index 100%
rename from source/data/map/level_0.json
rename to resources/data/map/level_0.json
diff --git a/source/data/map/level_1.json b/resources/data/map/level_1.json
similarity index 100%
rename from source/data/map/level_1.json
rename to resources/data/map/level_1.json
diff --git a/source/data/map/level_2.json b/resources/data/map/level_2.json
similarity index 100%
rename from source/data/map/level_2.json
rename to resources/data/map/level_2.json
diff --git a/source/data/map/level_3.json b/resources/data/map/level_3.json
similarity index 100%
rename from source/data/map/level_3.json
rename to resources/data/map/level_3.json
diff --git a/source/data/map/level_4.json b/resources/data/map/level_4.json
similarity index 100%
rename from source/data/map/level_4.json
rename to resources/data/map/level_4.json
diff --git a/source/data/map/level_5.json b/resources/data/map/level_5.json
similarity index 100%
rename from source/data/map/level_5.json
rename to resources/data/map/level_5.json
diff --git a/source/component/menubar.py b/source/component/menubar.py
index 56054a5..b06e8d2 100644
--- a/source/component/menubar.py
+++ b/source/component/menubar.py
@@ -1,5 +1,3 @@
-__author__ = 'marble_xu'
-
 import random
 import pygame as pg
 from .. import tool
diff --git a/source/constants.py b/source/constants.py
index 0c4e2b6..09bfc9c 100644
--- a/source/constants.py
+++ b/source/constants.py
@@ -1,5 +1,3 @@
-__author__ = 'marble_xu'
-
 START_LEVEL_NUM = 1
 
 ORIGINAL_CAPTION = 'Plant VS Zombies Game'
diff --git a/source/main.py b/source/main.py
index 92fcdc1..7734e25 100644
--- a/source/main.py
+++ b/source/main.py
@@ -1,9 +1,10 @@
-__author__ = 'marble_xu'
+__author__ = 'wcb'
 
 from . import tool
 from . import constants as c
 from .state import mainmenu, screen, level
 
+# create a standard game
 def main():
     game = tool.Control()
     state_dict = {c.MAIN_MENU: mainmenu.Menu(),
diff --git a/source/state/level.py b/source/state/level.py
index 133cc28..eda3bbe 100644
--- a/source/state/level.py
+++ b/source/state/level.py
@@ -24,7 +24,7 @@ class Level(tool.State):
 
     def loadMap(self):
         map_file = 'level_' + str(self.game_info[c.LEVEL_NUM]) + '.json'
-        file_path = os.path.join('source', 'data', 'map', map_file)
+        file_path = os.path.join('resources', 'data', 'map', map_file)
         f = open(file_path)
         self.map_data = json.load(f)
         f.close()
diff --git a/source/state/mainmenu.py b/source/state/mainmenu.py
index 6ac345f..98c96b7 100644
--- a/source/state/mainmenu.py
+++ b/source/state/mainmenu.py
@@ -1,5 +1,3 @@
-__author__ = 'marble_xu'
-
 import pygame as pg
 from .. import tool
 from .. import constants as c
diff --git a/source/tool.py b/source/tool.py
index 1a319c8..0fdf565 100644
--- a/source/tool.py
+++ b/source/tool.py
@@ -1,5 +1,3 @@
-__author__ = 'marble_xu'
-
 import os
 import json
 from abc import abstractmethod
@@ -100,7 +98,7 @@ def load_image_frames(directory, image_name, colorkey, accept):
     tmp = {}
     # image_name is "Peashooter", pic name is 'Peashooter_1', get the index 1
     index_start = len(image_name) + 1 
-    frame_num = 0;
+    frame_num = 0
     for pic in os.listdir(directory):
         name, ext = os.path.splitext(pic)
         if ext.lower() in accept:
@@ -154,14 +152,14 @@ def load_all_gfx(directory, colorkey=c.WHITE, accept=('.png', '.jpg', '.bmp', '.
     return graphics
 
 def loadZombieImageRect():
-    file_path = os.path.join('source', 'data', 'entity', 'zombie.json')
+    file_path = os.path.join('resources', 'data', 'entity', 'zombie.json')
     f = open(file_path)
     data = json.load(f)
     f.close()
     return data[c.ZOMBIE_IMAGE_RECT]
 
 def loadPlantImageRect():
-    file_path = os.path.join('source', 'data', 'entity', 'plant.json')
+    file_path = os.path.join('resources', 'data', 'entity', 'plant.json')
     f = open(file_path)
     data = json.load(f)
     f.close()