diff --git a/history/002_first_eye/src/main/java/com/github/drinkjava2/frog/env/Env.java b/history/002_first_eye/src/main/java/com/github/drinkjava2/frog/env/Env.java
new file mode 100644
index 0000000..8dbe65d
--- /dev/null
+++ b/history/002_first_eye/src/main/java/com/github/drinkjava2/frog/env/Env.java
@@ -0,0 +1,156 @@
+package com.github.drinkjava2.frog.env;
+
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Image;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+import javax.swing.JPanel;
+
+import com.github.drinkjava2.frog.Frog;
+import com.github.drinkjava2.frog.egg.Egg;
+import com.github.drinkjava2.frog.util.EggTool;
+
+/**
+ * Env is the living space of frog. draw it on JPanel
+ * 
+ * @author Yong Zhu
+ * @since 1.0
+ */
+@SuppressWarnings("serial")
+public class Env extends JPanel {
+	/** Speed of test */
+	public static final int SHOW_SPEED = 5; // 测试速度，1~1000,可调, 数值越小，速度越慢
+
+	public static final int ENV_WIDTH = 400; // 虚拟环境的宽度, 可调
+
+	/** Delete eggs at beginning of each run */
+	public static final boolean DELETE_EGGS = true;// 每次运行是否先删除保存的蛋
+
+	/** Virtual environment y size pixels */
+	public static final int ENV_HEIGHT = ENV_WIDTH; // 虚拟环境高度, 可调，通常取正方形
+
+	/** Frog's brain display width on screen, not important */
+	public static final int FROG_BRAIN_DISP_WIDTH = 300; // Frog的脑图在屏幕上的显示大小,可调
+
+	/** Steps of one test round */
+	public static final int STEPS_PER_ROUND = 3000;// 每轮测试步数,可调
+
+	/** Frog's brain width, fixed to 1000 unit */
+	public static final float FROG_BRAIN_WIDTH = 1000; // frog的脑宽度固定为1000,不要随便调整,因为器官的相对位置和大小是按脑大小设定的
+
+	static {
+		System.out.println("唵缚悉波罗摩尼莎诃!"); // 杀生前先打印往生咒，见码云issue#IW4H8
+		if (DELETE_EGGS)
+			EggTool.deleteEggs();
+	}
+
+	public static final int FOOD_QTY = 2000; // 食物数量, 可调
+
+	public static final int EGG_QTY = 50; // 每轮下n个蛋，可调，只有最优秀的前n个青蛙们才允许下蛋
+
+	private static final Random r = new Random(); // 随机数发生器
+
+	public static boolean pause = false; // 暂停按钮按下将暂停测试
+
+	public static final boolean[][] foods = new boolean[ENV_WIDTH][ENV_HEIGHT];// 食物数组定义
+
+	public List<Frog> frogs = new ArrayList<>();
+
+	public List<Egg> eggs;
+
+	public Env() {
+		super();
+		this.setLayout(null);// 空布局
+		this.setBounds(1, 1, ENV_WIDTH, ENV_HEIGHT);
+	}
+
+	private void rebuildFrogAndFood() {
+		frogs.clear();
+		for (int i = 0; i < ENV_WIDTH; i++) {// 清除食物
+			for (int j = 0; j < ENV_HEIGHT; j++) {
+				foods[i][j] = false;
+			}
+		}
+		Random rand = new Random();
+		for (int i = 0; i < eggs.size(); i++) {// 创建青蛙，每个蛋生成4个蛙，并随机取一个别的蛋作为精子
+			int loop = 4;
+			if (i == 0)
+				loop = 8;
+			if (i == eggs.size() - 1)
+				loop = 0;
+			for (int j = 0; j < loop; j++) {
+				Egg zygote = new Egg(eggs.get(i), eggs.get(r.nextInt(eggs.size())));
+				frogs.add(new Frog(rand.nextInt(ENV_WIDTH), rand.nextInt(ENV_HEIGHT), zygote));
+			}
+		}
+
+		System.out.println("Created " + 4 * eggs.size() + " frogs");
+		for (int i = 0; i < Env.FOOD_QTY; i++) // 生成食物
+			foods[rand.nextInt(ENV_WIDTH)][rand.nextInt(ENV_HEIGHT)] = true;
+	}
+
+	private void drawFood(Graphics g) {
+		for (int x = 0; x < ENV_WIDTH; x++)
+			for (int y = 0; y < ENV_HEIGHT; y++)
+				if (foods[x][y]) {
+					g.fillOval(x, y, 4, 4);
+				}
+	}
+
+	private static void sleep() {
+		try {
+			Thread.sleep(300);
+		} catch (InterruptedException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+
+	public void run() throws InterruptedException {
+		EggTool.loadEggs(this); // 从磁盘加载egg，或新建一批egg
+		int round = 1;
+		Image buffImg = createImage(this.getWidth(), this.getHeight());
+		Graphics g = buffImg.getGraphics();
+		long t1, t2;
+		do {
+			if (pause) {
+				sleep();
+				continue;
+			}
+			t1 = System.currentTimeMillis();
+			rebuildFrogAndFood();
+			boolean allDead = false;
+			for (int i = 0; i < STEPS_PER_ROUND; i++) {
+				if (allDead) {
+					System.out.println("All dead at round:" + i);
+					break; // 全死光了就直接跳到下一轮,以节省时间
+				}
+				allDead = true;
+				for (Frog frog : frogs)
+					if (frog.active(this))
+						allDead = false;
+				if (i % SHOW_SPEED != 0) // 画青蛙会拖慢速度
+					continue;
+				// 开始画青蛙
+				g.setColor(Color.white);
+				g.fillRect(0, 0, this.getWidth(), this.getHeight());
+				g.setColor(Color.BLACK);
+				for (Frog frog : frogs)
+					frog.show(g);
+
+				drawFood(g);
+				Graphics g2 = this.getGraphics();
+				g2.drawImage(buffImg, 0, 0, this);
+			}
+
+			EggTool.layEggs(this);
+			Application.brainStructure.drawBrainPicture(frogs.get(0));
+			t2 = System.currentTimeMillis();
+			Application.mainFrame.setTitle("Frog test round: " + round++ + ", time used: " + (t2 - t1) + " ms, x="
+					+ frogs.get(0).x + ", y=" + frogs.get(0).y);
+		} while (true);
+	}
+}