diff --git a/docs/坦克大战笔记.docx b/docs/坦克大战笔记.docx
index e73a902..bfe337d 100644
Binary files a/docs/坦克大战笔记.docx and b/docs/坦克大战笔记.docx differ
diff --git a/src/com/demo/tank/course7/abstractFactory/CircleTank.java b/src/com/demo/tank/course7/abstractFactory/CircleTank.java
index 2bf992c..af4c51c 100644
--- a/src/com/demo/tank/course7/abstractFactory/CircleTank.java
+++ b/src/com/demo/tank/course7/abstractFactory/CircleTank.java
@@ -23,7 +23,6 @@ public class CircleTank extends BaseTank{
     public static final int WIDTH = ResourceManager.tankD.getWidth();
     public static final int HEIGHT = ResourceManager.tankD.getHeight();
     private Random random = new Random();
-    public Rectangle rect = new Rectangle();
     FireStrategy fireStrategy;
 
 
@@ -58,8 +57,8 @@ public class CircleTank extends BaseTank{
         if(!living) tankFrame.enemyTanks.remove(this);
         //根据方向绘制坦克
        Color c = g.getColor();
-       g.setColor(this.group == Group.BAD ? Color.RED : Color.YELLOW);
-       g.fillOval(x,y, 40, 40);
+       g.setColor(this.group == Group.BAD ? Color.PINK : Color.YELLOW);
+       g.fillOval(x,y, 50, 50);
        g.setColor(c);
        move();
     }