The background color of the photo is red. How to turn white under the light and shadow magician?

The steps of changing the red background photo into white with the light and shadow magician are as follows:

1. Open the magic hand of light and shadow, and click Open at the top left.

2. Find the photos you need from the computer folder and open them.

3. Chromaticity matting in matting.

4. Click the red background removal red background with a brush, adjust the tolerance above, and click the replacement background below.

5. Click on the right to select the background, select the solid background, and click on white.

6. At this time, I successfully changed the photo with red background into white with the light and shadow magician.