The specific operation includes the following steps:

1. Use a sharp knife to cut the pepper in half and remove the seeds.

2. Pay attention to the weather forecast to see which day it will be sunny. It usually needs to be sunny for at least three consecutive days. Forecast information can be found on TV, online or in newspapers.

3. Sprinkle the halved chili peppers on a large plate and expose them to the sun. Outdoors is the best, if not, the window is fine.

4. Put it in the sun for at least 8 hours, then turn the peppers up and down, and then dry them.

5. Cover the plate where the peppers are dried with a cloth or towel to prevent insects from entering. As soon as the sun comes out the next day, put it out to continue drying.

6. When the pepper can be easily crushed with your fingers, it is almost dry. Store them in a sealable container for later use.