问背景与我的另一个JLabels的视觉重叠

EN

public class Game extends JPanel {
    
    Player p1 = new Player(this, 'a');
    Player p2 = new Player(this, 'r');
    
    public Game() {}
    
    public void move() {}
    public void gameOver() {}
    
    @Override
    public void paint(Graphics g) {
        super.paint(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        p1.paint(g2d);
        p2.paint(g2d);
    }
    
    public static void main(String[] args) throws InterruptedException, IOException {

        BufferedImage img = ImageIO.read(new File(not relevant));
        JFrame frame = new JFrame("Window");
        JLabel background = new JLabel(new ImageIcon(img));
        Game game = new Game();
        
        
        frame.add(game);
        frame.add(background);
        
        
        frame.pack();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);

        while (true) {
            game.move();
            game.repaint();
            Thread.sleep(10);
        }
    }

}