Why is the stool blocked and the door won't open?

Here are some simple solutions that can help you block the door and prevent it from being opened:

1. Use chairs or stools: put one or more chairs or stools behind the door to prevent the door from being opened. If you have a sturdy stool, you can turn it upside down so that its feet can provide better support and prevent the door from being opened.

2. Lock the door: If you can lock the door, it will be the simplest and most effective way. If your door is unlocked, you can buy a lock to install it.

3. Use the door lever: The door lever is a solid device that can be inserted between the door frame and the door to prevent the door from being opened. Door poles can be purchased at hardware stores or online.

4. Use furniture: If you have any large furniture, such as tables or bookshelves, you can put them behind the door to prevent the door from being opened.

No matter which way you choose, you need to pay attention to safety. Make sure that when the door is opened, the items you use will not fly out or hurt you. At the same time, you need to pay attention to whether the items you use will damage the door frame or the door itself.