Pretend the system's being upgraded.

1. This tool allows you to make your computer appear as if it is currently updating, enabling you to slack off.

2. This tool uses a web page to simulate the system update interface for Windows 7, Windows 10, Windows XP, Ubuntu, and other operating systems, thereby achieving the goal of mimicking a system update.

3. If your browser does not automatically go full screen, press the F11 key to force full-screen mode.

4. A little slacking off is good for your health, but don’t forget to work hard too.