===================================================================
--- original.js
+++ change.js
@@ -1,55 +1,21 @@
 /**** 
 * Classes
 ****/ 
-// Bullet class
-var Bullet = Container.expand(function () {
-	var self = Container.call(this);
-	var bulletGraphics = self.attachAsset('bullet', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.speed = -5;
-	self.update = function () {
-		self.y += self.speed;
-	};
-});
 var Cannon = Container.expand(function () {
 	var self = Container.call(this);
 	var cannonGraphics = self.attachAsset('Cannon', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	self.fireBullet = function (target) {
-		var bullet = new Bullet();
-		bullet.x = self.x;
-		bullet.y = self.y;
-		var dx = target.x - self.x;
-		var dy = target.y - self.y;
-		var angle = Math.atan2(dy, dx);
-		bullet.speedX = Math.cos(angle) * bullet.speed;
-		bullet.speedY = Math.sin(angle) * bullet.speed;
-		game.addChild(bullet);
-	};
 });
 // Cannon2 class
 var Cannon2 = Container.expand(function () {
 	var self = Container.call(this);
 	var cannon2Graphics = self.attachAsset('Cannon2', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	self.fireBullet = function (target) {
-		var bullet = new Bullet();
-		bullet.x = self.x;
-		bullet.y = self.y;
-		var dx = target.x - self.x;
-		var dy = target.y - self.y;
-		var angle = Math.atan2(dy, dx);
-		bullet.speedX = Math.cos(angle) * bullet.speed;
-		bullet.speedY = Math.sin(angle) * bullet.speed;
-		game.addChild(bullet);
-	};
 });
 // EnemyPlane class
 var EnemyPlane = Container.expand(function () {
 	var self = Container.call(this);
@@ -120,13 +86,8 @@
 
 /**** 
 * Game Code
 ****/ 
-// Create a bullet
-var bullet = new Bullet();
-bullet.x = 2048 / 2; // Position at the center of the screen
-bullet.y = 2732; // Position at the bottom of the screen
-game.addChild(bullet);
 var background2 = game.attachAsset('background2', {
 	anchorX: 0.5,
 	anchorY: 0.5,
 	scaleX: 1,
@@ -210,10 +171,8 @@
 	// Update all enemy planes
 	for (var i = 0; i < enemyPlanes.length; i++) {
 		enemyPlanes[i].update();
 	}
-	// Update the bullet
-	bullet.update();
 	// EnemyBot removed, no initialization here
 	// Removed enemyBot.stateTime increment
 	// EnemyBot related code removed
 	// Player's plane no longer shoots bullets
@@ -275,10 +234,14 @@
 			// Trigger game over
 			LK.showGameOver();
 		}
 	}
-	// Fire a bullet from each cannon towards the player's plane every second
-	LK.setInterval(function () {
-		cannon.fireBullet(plane1);
-		cannon2.fireBullet(plane1);
-	}, 1000);
+	// Delay the movement of the cannons by 4 seconds after the game starts
+	LK.setTimeout(function () {
+		if (cannon.x < 100) {
+			cannon.x += 2;
+		}
+		if (cannon2.x > 1950) {
+			cannon2.x -= 2;
+		}
+	}, 4000);
 });
\ No newline at end of file