The small advertisement posted on the door can be easily removed using Fengyoujing. The specific operation method is as follows:

Material preparation: Fengyoujing.

1. First apply the essential oil on your hands, as shown in the picture below:

2. Apply the essential oil on the small advertisement posted on the security door with your hands until the Apply the circle of the small advertisement once, as shown in the picture below:

3. Wait for ten minutes, as shown in the picture below:

4. Then gently tear off the small advertisement with your hands As shown in the picture below:

5. The small advertisement posted on the door can be easily removed after being soaked in Fengyoujing, as shown in the picture below: