diff --git a/history/002_first_eye/src/main/java/com/github/drinkjava2/frog/env/BrainPicture.java b/history/002_first_eye/src/main/java/com/github/drinkjava2/frog/env/BrainPicture.java
new file mode 100644
index 0000000..7577d04
--- /dev/null
+++ b/history/002_first_eye/src/main/java/com/github/drinkjava2/frog/env/BrainPicture.java
@@ -0,0 +1,127 @@
+package com.github.drinkjava2.frog.env;
+
+import java.awt.Color;
+import static java.awt.Color.*;
+import java.awt.Graphics;
+
+import javax.swing.JPanel;
+
+import com.github.drinkjava2.frog.Frog;
+import com.github.drinkjava2.frog.brain.Organ;
+import com.github.drinkjava2.frog.egg.CellGroup;
+import com.github.drinkjava2.frog.egg.Zone;
+
+/**
+ * BrainPicture show first frog's brain structure, for debug purpose only
+ * 
+ * @author Yong Zhu
+ * @since 1.0
+ */
+@SuppressWarnings("serial")
+public class BrainPicture extends JPanel {
+	private float brainWidth; // real brain width
+	private int brainDispWidth; // screen display width
+
+	public BrainPicture(int x, int y, float brainWidth, int brainDispWidth) {
+		super();
+		this.setLayout(null);// 空布局
+		this.brainDispWidth = brainDispWidth;
+		this.brainWidth = brainWidth;
+		this.setBounds(x, y, brainDispWidth + 1, brainDispWidth + 1);
+	}
+
+	void drawZone(Graphics g, Zone z) {
+		float rate = brainDispWidth / brainWidth;
+		int x = Math.round(z.x * rate);
+		int y = Math.round(z.y * rate);
+		int radius = Math.round(z.radius * rate);
+		g.drawRect(x - radius, y - radius, radius * 2, radius * 2);
+	}
+
+	void drawCircle(Graphics g, Zone z) {
+		float rate = brainDispWidth / brainWidth;
+		int x = Math.round(z.x * rate);
+		int y = Math.round(z.y * rate);
+		g.drawArc(x - 5, y - 5, 10, 10, 0, 360);
+	}
+
+	void fillZone(Graphics g, Zone z) {
+		float rate = brainDispWidth / brainWidth;
+		int x = Math.round(z.x * rate);
+		int y = Math.round(z.y * rate);
+		int radius = Math.round(z.radius * rate);
+		g.fillRect(x - radius, y - radius, radius * 2, radius * 2);
+	}
+
+	void drawLine(Graphics g, Zone z1, Zone z2) {
+		float rate = brainDispWidth / brainWidth;
+		int x1 = Math.round(z1.x * rate);
+		int y1 = Math.round(z1.y * rate);
+		int x2 = Math.round(z2.x * rate);
+		int y2 = Math.round(z2.y * rate);
+		g.drawLine(x1, y1, x2, y2);
+	}
+
+	void drawText(Graphics g, Zone z, String text) {
+		float rate = brainDispWidth / brainWidth;
+		int x = Math.round(z.x * rate);
+		int y = Math.round(z.y * rate);
+		g.drawString(text, x, y);
+	}
+
+	private static final Color[] rainbow = new Color[] { RED, ORANGE, YELLOW, GREEN, CYAN, BLUE, MAGENTA };
+	private static int nextColor = 0;
+
+	private static Color nextRainbowColor() {
+		if (nextColor == rainbow.length)
+			nextColor = 0;
+		return rainbow[nextColor++];
+	}
+
+	private static Color color(float i) {
+		if (i <= 1)
+			return Color.RED;
+		if (i <= 3)
+			return Color.ORANGE;
+		if (i <= 10)
+			return Color.YELLOW;
+		if (i <= 20)
+			return Color.GREEN;
+		if (i <= 50)
+			return Color.CYAN;
+		if (i <= 100)
+			return Color.BLUE;
+		return Color.MAGENTA;
+	}
+
+	public void drawBrainPicture(Frog frog) {
+		if (!Application.SHOW_FIRST_FROG_BRAIN)
+			return;
+		Graphics g = this.getGraphics();// border
+		g.setColor(Color.WHITE);
+		g.fillRect(0, 0, brainDispWidth, brainDispWidth);
+		g.setColor(Color.black);
+		g.drawRect(0, 0, brainDispWidth, brainDispWidth);
+
+		for (Organ organ : frog.organs) {
+			g.setColor(nextRainbowColor());
+			drawZone(g, organ);
+			drawText(g, organ, String.valueOf(organ.type));
+		}
+
+		for (CellGroup group : frog.cellGroups) {
+			if (!group.inherit)
+				g.setColor(Color.lightGray); // 如果是本轮随机生成的，灰色表示
+			else
+				g.setColor(color(group.cellQty)); // 如果是继承的，彩虹色表示，颜色数越往后表示数量越多
+			drawLine(g, group.groupInputZone, group.groupOutputZone);
+			drawZone(g, group.groupInputZone);
+			fillZone(g, group.groupOutputZone);
+			if (group.fat > 0) {
+				g.setColor(Color.BLACK);
+				drawCircle(g, group.groupOutputZone); // 如果胖了，表示激活过了，下次下蛋少不了这一组
+			}
+		}
+
+	}
+}